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# Selina solutions for Concise Chemistry Class 10 ICSE chapter 3 - Acids, Bases and Salts [Latest edition]

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## Chapter 3: Acids, Bases and Salts

Intext QuestionsExercise - 3AExercise - 3BExercise - 3CMiscellaneous Questions

#### Selina solutions for Concise Chemistry Class 10 ICSE Chapter 3 Acids, Bases and Salts Exercise Intext Questions [Pages 0 - 43]

Intext Questions | Q 1.1 | Page 42

What do you understand by the terms, acid?

Intext Questions | Q 1.2 | Page 42

Name the positive ion formed When an acid is dissolved in water. Draw the structure of this ion .

Intext Questions | Q 2 | Page 42

Write the ionization of sulphuric acid showing the formation of hydronium ion.

Intext Questions | Q 4 | Page 42

Define the term 'basicity' of an acid. Give the basicity of : nitric acid, sulphuric acid, phosphoric acid?

Intext Questions | Q 5.1 | Page 42

Give two examples of the following:

oxy-acid

Intext Questions | Q 5.2 | Page 42

Give two examples of the following:
hydracids

Intext Questions | Q 5.3

Give two examples of the following:
tribasic acid

Intext Questions | Q 5.4 | Page 42

Give two examples of the following:
dibasic acid

Intext Questions | Q 6.1 | Page 42

Name the acidic anhydride of the following acids:
(i) sulphurous acid
(ii) nitric acid
(iii) phosphoric acid
(iv) carbonic acid

Intext Questions | Q 6.2 | Page 42

Name the acids present in vinegar, grapes and lemon.

Intext Questions | Q 7 | Page 42

What do you understand by the statement ‘acetic acid is a monobasic acid?

Intext Questions | Q 8.1 | Page 42

Give a balanced equation for reaction of nitrogen dioxide with water.

Intext Questions | Q 8.2 | Page 42

Give a balanced equation for Preparation of a non-volatile acid from a volatile acid.

Intext Questions | Q 9 | Page 42

What do you understand by the strength of an acid? On which factor does the strength of an acid depend?

Intext Questions | Q 10.1 | Page 42

Explain the following :
Carbonic acid gives an acid salt but hydrochloric acid does not.

Intext Questions | Q 10.2 | Page 42

Explian the following :
Dil. HCl acid is stronger than highly concentrated acetic acid.

Intext Questions | Q 10.3 | Page 42

Explain the following :
H3POis not a tribasic acid .

Intext Questions | Q 10.4 | Page 42

Explain the following :

Lead carbonate does not react with dilute HCl .

Intext Questions | Q 10.5 | Page 42

Explain the following :
Nitrogen dioxide is a double acid anhydride.

Intext Questions | Q 11.1 | Page 43

How is an acid prepared from a Non-metal
Give an equation for it.

Intext Questions | Q 11.2 | Page 43

How is an acid prepared from a Salt?
Give an equation for it.

Intext Questions | Q 12.1 | Page 43

Give equation to show how the following is made from their corresponding anhydride.

sulphurous acid

Intext Questions | Q 12.2 | Page 43

Give equation to show how the following is made from their corresponding anhydride.
phosphoric acid

Intext Questions | Q 12.3 | Page 43

Give equation to show how the following is made from their corresponding anhydride.
carbonic acid

Intext Questions | Q 12.4 | Page 43

Give equation to show how the following is made from their corresponding anhydrides.
sulphuric acid

Intext Questions | Q 13.1 | Page 43

Name an acid used to flavor and preserve food.

Intext Questions | Q 13.2 | Page 43

Name an acid used in a drink.

Intext Questions | Q 13.3 | Page 43

Name an acid used to remove ink spots.

Intext Questions | Q 13.4 | Page 43

Name an acid used as an eyewash.

Intext Questions | Q 14.1 | Page 43

Give the reaction of acid with Chlorides
State the conditions under which they react.

Intext Questions | Q 14.2 | Page 43

Give the reaction of acid with nitrates
State the conditions under which they react.

#### Selina solutions for Concise Chemistry Class 10 ICSE Chapter 3 Acids, Bases and Salts Exercise Exercise - 3A [Pages 47 - 48]

Exercise - 3A | Q 1 | Page 47

What do you understand by an alkali? Give two examples of:
(a) strong alkalis
(b) weak alkalis

Exercise - 3A | Q 2.1 | Page 47

What is the difference between an alkali and a base?

Exercise - 3A | Q 2.2 | Page 47

What is the difference between :

The chemical nature of an aqueous solution of HCl and an aqueous solution of NH3

Exercise - 3A | Q 3.1 | Page 47

Name the ions furnished by bases in solution.

Exercise - 3A | Q 3.2 | Page 47

Name the ions furnished by an acid.

Exercise - 3A | Q 4.1 | Page 47

Give one example in the following case:
A basic oxide which is soluble in water.

Exercise - 3A | Q 4.2 | Page 47

Give one example in the following case:
A hydroxide which is highly soluble in water.

Exercise - 3A | Q 4.3 | Page 47

Give one example in the following case:
A basic oxide which is insoluble in water.

Exercise - 3A | Q 4.4 | Page 47

Give one example in the following case:
a hydroxide which is insoluble in water.

Exercise - 3A | Q 4.5 | Page 47

Give one example in the following case:
A weak mineral acid.

Exercise - 3A | Q 4.6 | Page 47

Give one example in the following case:
a base which is not an alkali.

Exercise - 3A | Q 4.7 | Page 47

Give one example in the following case:
An oxide which is a base.

Exercise - 3A | Q 4.8 | Page 47

Give one example in the following case:
A hydrogen containing compound which is not an acid.

Exercise - 3A | Q 4.9 | Page 47

Give one example in the following case:
A base which does not contain a metal ion.

Exercise - 3A | Q 5 | Page 47

You have been provided with three test tubes. One of them contains distilled water and the other two have an acidic solution and a basic solution respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?

Exercise - 3A | Q 6 | Page 47

HCl, HNO3, C2H5OH, C6H12O6 all contain H atoms but only HCl and HNO3 show acidic character. Why?

Exercise - 3A | Q 7.1 | Page 47

Dry HCI gas does not change the colour of dry litmus paper. Why?

Exercise - 3A | Q 7.2 | Page 47

Is PbO2 a base or not? Comment.

Exercise - 3A | Q 7.3 | Page 47

Do basic solutions also have H+(aq)? Why are they basic?

Exercise - 3A | Q 8.1 | Page 47

How would you obtain a base from another base.

Exercise - 3A | Q 8.2 | Page 47

How would you obtain an alkali from a base.

Exercise - 3A | Q 8.3 | Page 47

How would you obtain salt from another salt?

Exercise - 3A | Q 9.1 | Page 47

Write balanced equation to satisfy the following statement:
Acid + Active metal ⟶ Salt + hydrogen

Exercise - 3A | Q 9.2 | Page 47

Write balanced equation to satisfy the following statement:
Acid + Base ⟶ Salt + water

Exercise - 3A | Q 9.3 | Page 48

Write balanced equation to satisfy the following statement:
Acid + carbonate Or bicarbonate ⟶ Salt + water + carbon dioxide

Exercise - 3A | Q 9.4 | Page 48

Write balanced equation to satisfy the following statement:
Acid + sulphite Or bisulphite ⟶ Salt + water + sulphur dioxide

Exercise - 3A | Q 9.5 | Page 48

Write balanced equation to satisfy the following statement:
Acid + sulphide ⟶ Salt + Hydrogen sulphide

Exercise - 3A | Q 10 | Page 48

The skin has and needs natural oils. Why is it advisable to wear gloves while working with strong allkalis?

Exercise - 3A | Q 11 | Page 48

Complete the table:

 Indicator Neutral Acidic Alkaline Litmus Phenolphthalein Purple Colourless
Exercise - 3A | Q 12 | Page 48

What do you understand by pH value? Two solutions X and Y have pH values of 4 and 10, respectively. Which one of these two will give a pink colour with phenolphthalein indicator?

Exercise - 3A | Q 12.2 | Page 48

Two solutions X and Y have Ph values of 4 and 10 respectively. Which one of these two will give a pink colour with phenolphthalein indicator?

Exercise - 3A | Q 13 | Page 48

You are supplied with five solutions: A, B, C, D and E with Ph values as follows: A= 1.8, B = 7, C= 8.5, D = 13, and E=5
Classify these solutions as neutral, slightly or strongly acidic and slightly or strongly alkaline.

Which solution would be most likely to liberate hydrogen with:
(a) magnesium powder,
(b) powdered zinc metal. Give a word equation for each reaction.

Exercise - 3A | Q 14.1 | Page 48

Distinguish between a common acid base indicator and a universal indicator.

Exercise - 3A | Q 14.2 | Page 48

Distinguish between acidity of bases and basicity of acids.

Exercise - 3A | Q 14.3 | Page 48

Distinguish between acid and alkali (other than indicators).

Exercise - 3A | Q 15.1 | Page 48

What should be added to Increase the pH value .

Exercise - 3A | Q 15.2 | Page 48

What should be added to Decrease the pH value of a neutral solution?

Exercise - 3A | Q 16 | Page 48

How does tooth enamel get damaged? What should be done to prevent it?

Exercise - 3A | Q 17 | Page 48

When you use universal indicator, you see that solutions of different acids produce different colours. Indeed, solution of the same acid with different concentrations will also give different colours. Why?

Exercise - 3A | Q 18.1 | Page 48

A solution has a pH of 7. Explain how you would increase its pH .

Exercise - 3A | Q 18.1 | Page 48

A solution has a pH of 7. Explain how you would decrease its pH .

Exercise - 3A | Q 18.2 | Page 48

If a solution changes the colour of litmus from red to blue, what can you say about its pH?

Exercise - 3A | Q 18.3 | Page 48

What can you say about the pH of a solution that liberates carbon dioxide from sodium carbonate?

Exercise - 3A | Q 19.1 | Page 48

Solution P has a pH of 13, solution Q has a pH of 6 and solution R has a pH of 2.

Which solution will liberate ammonia from ammonium sulphate on heating?

Exercise - 3A | Q 19.2 | Page 48

Solution P has a pH of 13, solution Q has a pH of 6 and solution R has a pH of 2.

Which solution is a strong acid?

Exercise - 3A | Q 19.3 | Page 48

Solution P has a pH of 13, solution Q has a pH of 6 and solution R has a pH of 2.

Which solution contains molecules as well as ions?

Exercise - 3A | Q 20 | Page 48

M is an element in the form of a powder. M burns in oxygen and the product obtained is soluble in water. The solution is tested with litmus. Write down only the word which will correctly complete each of the following sentences.

(i) If M is a metal, then the litmus will turn _____________.
(ii) If M is a non-metal, then the litmus will turn ______________.
(iii) If M is a reactive metal, then _________________ will be evolved when M reacts with dilute sulphuric acid.
(iv) If M is a metal, it will form ______________ oxide, which will form ____________ solution with water.
(v) If M is a non-metal, it will not conduct electricity in the form of __________.

#### Selina solutions for Concise Chemistry Class 10 ICSE Chapter 3 Acids, Bases and Salts Exercise Exercise - 3B [Pages 55 - 57]

Exercise - 3B | Q 1.1 | Page 55

Define the following and give two examples in case a normal salt .

Exercise - 3B | Q 1.2 | Page 55

Define the following and give two examples in case an acid salt .

Exercise - 3B | Q 1.3 | Page 55

Define the following and give two examples in case a basic salt.

Exercise - 3B | Q 2.1 | Page 55

What is a ‘salt’?

Exercise - 3B | Q 2.2 | Page 55

Answer the following question related to salts and their preparations:

What kind of salt is prepared by precipitation?

Exercise - 3B | Q 2.3 | Page 55

Name a salt prepared by direct combination. Write an equation for the reaction that takes place in preparing the salt you have named.

Exercise - 3B | Q 2.4 | Page 55

Name the procedure used to prepare a sodium salt such as sodium sulphate.

Exercise - 3B | Q 4.1 | Page 55

How would you prepare :

Copper sulphate crystals from a mixture of charcoal and black copper oxide.

Exercise - 3B | Q 4.2 | Page 55

How would you prepare :

zinc sulphate crystals from zinc dust (powdered zinc and zinc oxide).

Exercise - 3B | Q 4.3 | Page 55

How would you prepare :

sodium hydrogen carbonate crystals.

Exercise - 3B | Q 4.4 | Page 55

How would you prepare :

Calcium sulphate from calcium carbonate

Exercise - 3B | Q 5 | Page 56

The following is a list of methods for the preparation of salts.
A – direct combination of two elements
B – reaction of a dilute acid with a metal.
C – reaction of a dilute acid with an insoluble base.
D – titration of a dilute acid with a solution of soluble base.
E – reaction of two solutions of salts to form a precipitate.
Choose from the above list A to E, the best method of preparing the following salts by giving a suitable equation in each case:
1. Anhydrous ferric chloride,
3. Sodium sulphate.
4. Copper sulphate.

Exercise - 3B | Q 6.04 | Page 56

Name a basic salt.

Exercise - 3B | Q 6.05 | Page 56

Name an acidic salt.

Exercise - 3B | Q 6.06 | Page 56

Name a mixed salt.

Exercise - 3B | Q 6.07 | Page 56

Name a complex salt.

Exercise - 3B | Q 6.08 | Page 56

Name a double salt.

Exercise - 3B | Q 6.09 | Page 56

Name a salts whose solubility increases with temperature.

Exercise - 3B | Q 6.1 | Page 56

Name a salt whose solubility decreases with temperature.

Exercise - 3B | Q 7 | Page 56

Fill in the blanks with suitable words :

An acid is a compound which when dissolved in water forms hydronium ions as the only …………… ions.
A base is a compound which is soluble in water and contains …………….. ions.
A base reacts with an acid to form a …………….. and water only. This type of reaction is known as …………….

Exercise - 3B | Q 8.1 | Page 56

What would you observe when Blue litmus is introduced into a solution of hydrogen choride gas?

Exercise - 3B | Q 8.2 | Page 56

What would you observe when Red litmus paper is introduced into a solution of ammonia in water?

Exercise - 3B | Q 8.3 | Page 56

What would you observe when Red litmus paper is introduced in Caustic soda solution?

Exercise - 3B | Q 9.1 | Page 56

Explain why It is necessary to find out the ration of reactants required in the preparation of sodium sulphate.

Exercise - 3B | Q 9.2 | Page 56

Explain why, fused calcium chloride is used in the preparation of FeCI3?

Exercise - 3B | Q 9.3 | Page 56

Explain why :

Anhydrous FeCl3 cannot be prepared by heating hydrated iron (III) chloride.

Exercise - 3B | Q 10 | Page 56

Give the preparation of the salt shown in the left column by matching with the methods given in the right column. Write a balanced equation for each preparation.

 Salt Method of preparation Zinc Sulphate Precipitation Ferrous sulphide Oxidation Barium Sulphate Displacement Ferric sulphate Neutralisation Sodium sulphate Synthesis
Exercise - 3B | Q 11.1 | Page 56

Give the Ph value of pure water. Does it change if common salt it added to it?

Exercise - 3B | Q 11.2 | Page 56

Classify the following solutions as acids, bases or salts ammonium hydroxide, barium chloride, sodium chloride, sodium hydroxide, H2SO4 and HNO3

Exercise - 3B | Q 12.1 | Page 56

Define the term neutralization, Give a reaction, mentioning clearly acid and base used in the reaction.

Exercise - 3B | Q 12.2 | Page 56

Define the term neutralization, if one mole of a strong acid reacts with one mole of a strong base, the heat produced is always the same. Why?

Exercise - 3B | Q 13.1 | Page 56

Write the balanced equation for the preparation of the following salt in the laboratory:

A soluble sulphate by the action of an acid on an insoluble base.

Exercise - 3B | Q 13.2 | Page 56

Write the balanced equation for the preparation of the following salts in the laboratory:

An insoluble salt by the action of an acid on another salt.

Exercise - 3B | Q 13.3 | Page 56

Write the balanced equation for the preparation of the following salts in the laboratory:

An insoluble base by the action of a soluble base on a soluble salt

Exercise - 3B | Q 13.4 | Page 56

Write the balanced equation for the preparation of the following salts in the laboratory:

A soluble sulphate by the action of an acid on a metal.

Exercise - 3B | Q 13.4 | Page 56

You are provided with the following chemicals : NaOH, Na2CO3, H2O, Zn(OH)2, CO2, HCI, Fe, H2SO4, CI2, Zn. Using the suitable chemicals from the given list only, state briefly how you would prepare:
(a) iron (III) chloride,
(b) sodium sulphate,
(c) sodium zincate
(d) iron (II) sulphate,
(e) sodium chloride?

Exercise - 3B | Q 15 | Page 56

For each of the salt: A, B, C and D, suggest a suitable method of its preparation.

1. A is a sodium salt.
2. B is an insoluble salt.
3. C is a soluble salt of copper.
4. D is a soluble salt of zinc.
Exercise - 3B | Q 16 | Page 56

Choosing only substances from the list given in the box below, write equations for the reactions which you would use in the laboratory to obtain:

1. Sodiumsulphate
2. Coppersulphate
3. Iron(II)sulphate
4. Zinc carbonate
 Dilute sulphuric acid Copper Copper carbonate Iron Sodium carbonate Sodium Zinc
Exercise - 3B | Q 17 | Page 57

From the formula listed below, choose one, in each case, corresponding to the salt having the given description: AgCl, CuCO3, CuSO4.5H2O, KNO3, NaCl, NaHSO4, Pb(NO3)2, ZnCO3, ZnSO4.7H2O.

1. an acid salt
2. an insoluble chloride
3. on treating with concentratedsulphuric acid, this salt changes from blue to white
4. on heating, this salt changes from green to black
5. this salt gives nitrogen dioxide on heating
Exercise - 3B | Q 18.1 | Page 57

Ca(H2PO4)2 is an example of a compound called _______ .

• acid salt

• basic salt

• normal salt

Exercise - 3B | Q 18.2 | Page 57

Write the balanced equation for the reaction of : A named acid and a named alkali.

Exercise - 3B | Q 19.1 | Page 57

State the term defined by the following sentence :

A soluble base.

Exercise - 3B | Q 19.2 | Page 57

State the term defined by the following sentence :

The insoluble solid formed when two solutions are mixed together.

Exercise - 3B | Q 20 | Page 57

Which of the following methods, (a), (b), (c), (d) or (e) is generally used for preparing the chlorides listed below from (i) to (v). Answer by writing down the chloride and the letter pertaining to the corresponding method. Each letter is to be used only once.
(a) Action of an acid on a metal.
(b) Action of an acid on an oxide or carbonate.
(c) Direct combination.
(d) Neutralization of an alkali by an acid.
(e) Precipitation (double decomposition).
(i) copper(II) chloride.
(ii) iron(II) chloride.
(iii) iron(IIl) chloride.
(v) sodium chloride.

Exercise - 3B | Q 21 | Page 57

Choose the most appropriate answer from ( SO2 , SiO2 , Al2O3 , CO , MgO , Na2O )
(a) A covalent oxide of a metalloid.
(b) An oxide which when dissolved in water form acid .
(c) A basic oxide
(d) An amphoteric oxide.

Exercise - 3B | Q 22 | Page 57

Complete the following table and write one equation for each to justify the statement :

 Reactants Products Method Soluble base + Acid (dil) Salt + water Neutralisation Titration Metal + Non-metal Salt (soluble/insoluble) …………… Insoluble base + .......... Salt (soluble) + water ……………. Active metal + Acid (dil) ………… + ………… ……………. Soluble salt solution (A) + Soluble salt solution (B) Precipitated salt + Soluble salt ……………. Carbonate/ bicarbonate + Acid (dil) Salt + ………. + ………… Decomposition of carbonate Chlorides/nitrates + Acid (conc) …………. + ………… Decomposition of chlorides and nitrates

#### Selina solutions for Concise Chemistry Class 10 ICSE Chapter 3 Acids, Bases and Salts Exercise Exercise - 3C [Page 60]

Exercise - 3C | Q 1.1 | Page 60

What do you understand by water of crystallization?

Exercise - 3C | Q 1.2 | Page 60

Give four substances which contain water of crystallization and write their common names.

Exercise - 3C | Q 2.1 | Page 60

Define efflorescence. Give examples.

Exercise - 3C | Q 2.2 | Page 60

define deliquescence. Give examples.

Exercise - 3C | Q 3 | Page 60

Answer the questions below relating your answers only to salts in the following list: Sodium chloride, anhydrous calcium chloride, copper sulphate-5-water?

1. What name is given to the water in the compound copper sulphate-5-water?
2. If copper sulphate-5-water is heated, anhydrous coppersulphate is formed. What is its colour?
3. By what means, other than healing, could you dehydrate copper sulphate-5-water and obtain anhydrous coppersulphate?
4. Which one of the salts in the given list is deliquescent?
Exercise - 3C | Q 4 | Page 60

State your observation when the following are exposed to the atmosphere.

(a) Washing soda crystals

(b) Iron (III) chloride salts

Exercise - 3C | Q 5.1 | Page 60

Give reason for the following:

Sodium hydrogen sulphate is not an acid but it dissolves in water to give hydrogen ions, according to the equation
NaHSO4 ⇆ H+ + Na+ + SO42-

Exercise - 3C | Q 5.2 | Page 60

Give reason for the following:

Anhydrous calcium chloride is used in a desiccator.

Exercise - 3C | Q 6 | Page 60

Explain clearly how conc, H2SO4 is used as dehydrating as well as drying agent.

Exercise - 3C | Q 7 | Page 60

Distinguish between drying and dehydrating agent.

Exercise - 3C | Q 8.1 | Page 60

State whether a sample of the following would increase or decrease in a mass if exposed to air.
Solid NaOH.

Exercise - 3C | Q 8.2 | Page 60

State whether a sample of the following would increase or decrease in a mass if exposed to air.

Solid CaCI2

Exercise - 3C | Q 8.3 | Page 60

State whether a sample of the following would increase or decrease in a mass if exposed to air.

Solid Na2CO3 .10H2O

Exercise - 3C | Q 8.4 | Page 60

State whether a sample of the following would increase or decrease in a mass if exposed to air.

Conc. sulphuric acid

Exercise - 3C | Q 8.5 | Page 60

State whether a sample of the following would increase or decrease in a mass if exposed to air.

Iron (III) Chloride

Exercise - 3C | Q 9.1 | Page 60

why does common salt get wet during the rainy season?

Exercise - 3C | Q 9.2 | Page 60

How can this impurity be removed?

Exercise - 3C | Q 9.3 | Page 60

Name a substance which changes the blue colour of copper sulphate crystals to white.

Exercise - 3C | Q 9.4 | Page 60

Name two crystalline substances which do not contain water of crystallization.

Exercise - 3C | Q 10 | Page 60

Name the salt which on hydrolysis forms

(a) Acidic

(b) Basic acid

(c) Neutral solution. Give a balanced equation for each reaction.

Exercise - 3C | Q 11.1 | Page 60

State the change noticed when blue litmus and red litmus is introduced in the following solution :

Na2CO3 solution

Exercise - 3C | Q 11.2 | Page 60

State the change noticed when blue litmus and red litmus is introduced in the following solution :

NaCl solution

Exercise - 3C | Q 11.3 | Page 60

State the change noticed when blue litmus and red litmus is introduced in the following solution :

NH4NO3

Exercise - 3C | Q 11.4 | Page 60

State the change noticed when blue litmus and red litmus is introduced in the following solution :

MgCl2 Solution

#### Selina solutions for Concise Chemistry Class 10 ICSE Chapter 3 Acids, Bases and Salts Exercise Miscellaneous Questions [Page 61]

Miscellaneous Questions | Q 1.1 | Page 61

Write the balanced equation for the preparation of the following compound (as major product) starting from iron and using only one other substance:

Iron (II) chloride

Miscellaneous Questions | Q 1.2 | Page 61

Write the balanced equation for the preparation of the following compound (as major product) starting from iron and using only one other substance:

Iron (III) chloride

Miscellaneous Questions | Q 1.3 | Page 61

Write the balanced equation for the preparation of the following compound (as major product) starting from iron and using only one other substance:

Iron (II) sulphate

Miscellaneous Questions | Q 1.4 | Page 61

Write the balanced equation for the preparation of the following compound (as major product) starting from iron and using only one other substance:

Iron (II) sulphide

Miscellaneous Questions | Q 2 | Page 61

Write a balanced reaction for the following conversions (A, B, C, D)

$\ce{Fe→[\Delta]FeCl2 →[B]FeCO3→[C]Fe(NO3)2→[D]Fe(OH)2}$

Miscellaneous Questions | Q 3.1 | Page 61

What is the first step that is required to prepare Lead sulphate from Lead carbonate?

Miscellaneous Questions | Q 3.2 | Page 61

Write the equation for the reaction that will take place when this first step is carried out.

Miscellaneous Questions | Q 3.3 | Page 61

Why is the direct addition of dilute sulphuric acid to Lead carbonate an impractical method of preparing Lead sulphate?

Miscellaneous Questions | Q 4 | Page 61

(a) What are the terms defined by the following?

(i) A salt containing a metal ion surrounded by other ions or molecules.

(ii) A base which is soluble in water.

(b) Making use only of substances chosen from those given below:

Dilute sulphuric acidSodium Carbonate

Zinc   Sodium sulphite

Give equations for the reactions by which you could obtain :

(i) Hydrogen

(ii) Sulphur dioxide

(iii) Carbon dioxide

(iv) Zinc carbonate (two steps required)

## Chapter 3: Acids, Bases and Salts

Intext QuestionsExercise - 3AExercise - 3BExercise - 3CMiscellaneous Questions

## Selina solutions for Concise Chemistry Class 10 ICSE chapter 3 - Acids, Bases and Salts

Selina solutions for Concise Chemistry Class 10 ICSE chapter 3 (Acids, Bases and Salts) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Chemistry Class 10 ICSE solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Concise Chemistry Class 10 ICSE chapter 3 Acids, Bases and Salts are Concept of Acids and Bases, Concept of Molecule, Preparation - Laboratory Preparation of Salts (Normal and Acid Salts) – Relevant Laboratory, General Properties of Salts:, Types of Salts, Use of Litmus and pH Paper to Test for Acidity and Alkalinity, Ions Present in Mineral Acids, Alkalis and Salts and Their Solutions.

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