Frank solutions for Chemistry Part 2 [English] Class 10 ICSE chapter 4 - Analytical Chemistry [Latest edition]

Choose the correct answer from the options given below :
Color of ferrous ion is

Which one is colourless anion?

Choose the correct answer from the options given below :
Sodium zincate (Na₂ZnO₂) is

Choose the correct answer from the options given below :
Metal + alkali → salt + _________

Choose the correct answer from the options given below :
Which salt solution is soluble in excess of NH₄OH

Identify the metallic oxide which is amphoteric in nature.

Nitrogen gas can be obtained by heating ______.

Fill in the blanks.
 Salts of ______ [normal / transition] elements are generally coloured.  From the ions K¹⁺, Cr³⁺, Fe²⁺, Ca²⁺, \[\ce{SO^2-_3}\], \[\ce{Mn^1-_4}\],\[\ce{NO^1_3}\] the ions generally coloured are ______.

Fill in the blank.
The hydroxide which is soluble in excess of NaOH is _________ [Zn(OH)₂ / Fe(OH)₃ / Fe(OH)₂].

Fill in the blank.
The salt which will not react with NH₄OH solution ______[ZnCl₂, CuCl₂ / NH₄Cl/ FeCl₂]

Fill in the blank.
The substance/s which react with hot conc. NaOH solution and undergoes a neutralization reaction ______ [Al₂O₃ / Al / Al(OH)₃]

Fill in the blank.
To distinguish soluble  salts of zinc and lead ______ [NaOH / NH₄OH]can be used.

Name a metallic hydroxide soluble in excess of NH₄OH.

Name: A metallic oxide soluble in excess of caustic soda solution.

Name: A strong alkali

Name: A weak alkali.

Name two coloured metal ions.

Name: Two bases which are not alkalis but dissolve in strong alkalis.

Name a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.

Name : A yellow monoxide that dissolves in hot and concentrated caustic alkali.

Name a white, insoluble oxide that dissolves when fused with caustic soda or caustic potash.

Name a compound containing zinc in the anion.

The oxides which exhibit both acidic and basic characters are said to be ______.

The ions of normal elements are ______ whereas the ions of transitional elements are ______. (coloured/colourless)

Sodium hydroxide is ______ alkali while ammonium hydroxide is ______ alkali. (weak/strong)

Write equation for:

Addition of NaOH to lead [Pb⁺²] salts.

Write equation for:

Reaction of tin with sodium hydroxide.

A metal whose alloy finds use in the construction of aircrafts in the powdered form is added to sodium hydroxide solution. A colourless gas was evolved and after reaction was over, the solution was colourless.
(a) Name the powdered metal added to sodium hydroxide solution.
(b) Name the gas evolved.
(c) Name the salt present in the colorless solution.

Write the colour of the following salts: Cuprous salts.

Write the colour of the following salt : Cupric salts.

Write the colour of the following salt : Aluminium salts.

Write the colour of the following salt : Ferrous salts.

Write the colour of the following salt : Ferric salts.

Write the colour of the following salt : Calcium salts.

Using ammonium hydroxide, how would you distinguish between the following pair of ions in solution?
Ferrous ion and Ferric ion.

Name the method used for preparation of the following salt from the list given below:
Zinc ion and Lead ion.

You are provided with PbCO₃, ZnCO₃ and CaCO₃. How will you identify these cations?

Z is a compound. With dilute HCl it gives a gas turning dichromatic solution green. Z gives lilac flame. Name Z.

What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : FeCl₃

What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : ZnSO₄

What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : Pb(NO₃)₂

What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : CuSO₄

What is the reaction of freshly precipitated aluminium hydroxide with caustic soda solution? Give equation.

What do you understand by amphoteric oxide?

Give the balanced equations for the reaction with three different amphoteric oxides with a caustic alkali. Write your observation if any.

Name a solution that will separate the component of the following mixture: Zn(OH)₂ from Pb(OH)₂

Name a solution that will separate the component of the following mixture: CaO from PbO

Name a solution that will separate the component of the following mixture: CuO from ZnO

Give two examples of amphoteric hydroxides.

What happens when ammonia solution is added first dropwise and then in excess to the following solution:

CuSO₄

Write a balanced equation for this reaction.

What happens when ammonia solution is added first dropwise and then in excess to the following solution:

ZnSO₄

Write a balanced equation for this reaction.

What happens when ammonia solution is added first dropwise and then in excess to the following solution:

FeCl₃

Write a balanced equation for this reaction.

Name the chloride of a metal which is soluble in excess of ammonium hydroxide.

On adding dilute ammonia solution to a colourless solution of a salt, a white gelatinous precipitate appears. This precipitate, however, dissolves on addition of excess of ammonia solution. Identify (Choose from Na, Al, Zn, Pb, Fe).

1. Which metal salt solution was used?
2. What is the formula of the white gelatinous precipitate obtained?

Give two important uses of ammonium hydroxide.

You are given a mixture of precipitated copper hydroxide and zinc hydroxide. Name a solvent which will dissolve:

1. only copper hydroxide
2. only zinc hydroxide
3. both copper hydroxide and zinc hydroxide.

Using sodium hydroxide solution, how will you distinguish: Zinc nitrate solution from calcium nitrate solution

Using sodium hydroxide solution, how will you distinguish:
Iron (II) chloride from iron (III) chloride

Using sodium hydroxide solution, how will you distinguish:
Lead hydroxide from magnesium hydroxide.

Sodium hydroxide solution is added to solution A. A white precipitate is formed which is soluble in excess sodium hydroxide. Name the metal ion present in A.

When ammonium hydroxide is added to solution B, a pale blue precipitate is formed. This pale blue precipitate dissolves in excess ammonium hydroxide, giving an inky blue solution. What is the cation [positive ion] present in solution B? what is the probable colour of solution B?

What do you see when sodium hydroxide solution is added to zinc sulphate solution, till it is in excess?

You are given three white powders-calcium carbonate, lead carbonate and zinc carbonate. Describe the tests you would carry out in solution, to identify the metal ion in each of the above compounds. Indicate clearly how you would prepare the solutions for the tests.

Write equation for the reaction that will take place when copper sulphate solution is added to sodium hydroxide solution.

Three test tubes contain calcium nitrate solution, zinc nitrate solution and lead nitrate solution respectively. Each solution is divided into two portions (i) and (ii). Describe the effect of

1. adding sodium hydroxide solution to each portion in turn till it is in excess.
2. adding ammonium hydroxide to each portion in turn till it is in excess.

Sodium hydroxide solution can be used to distinguish between i. iron (II) sulphate solution and (ii) iron (III) sulphate solution; because these solutions give different coloured precipitates with sodium hydroxide solution. Give the colour of the precipitate formed with each of the solution.

What will you observe when barium chloride solution is added to iron(II) sulphate solution.

How will the action of dilute hydrochloric acid on sodium carbonate and sodium sulphite enables you to distinguish between these two compounds?

One chemical test that would enable you to distinguish between the following pair of chemicals. Describe what happens with each chemical or state 'no visible reaction'.

One chemical test that would enable you to distinguish between the following pair of chemicals. Describe what happens with each chemical or state 'no visible reaction'.
Sodium sulphate solution and sodium chloride solution.

One chemical test that would enable you to distinguish between the following pair of chemicals. Describe what happens with each chemical or state 'no visible reaction'.
Calcium nitrate solution and zinc nitrate solution.

Write balanced equation for the following reaction:
Iron(II) chloride solution with sodium hydroxide solution.

Write balanced equation for the following reaction:
Chlorine and cold dilute sodium hydroxide solution.

Write balanced equation for the following reaction:
Zinc and sodium hydroxide solution

Write balanced equation for the following reaction:
Sulphur dioxide and sodium hydroxide solution 
(Give the equation for the formation of the normal salt)

State what do you observe when:
Neutral litmus solution is added to alkaline solution

State what do you observe when:
Ammonium hydroxide is added to iron (III) sulphate solution.

State what do you observe when:
Lead nitrate and sodium chloride are mixed.

State what do you observe when:
Ethane is bubbled through a solution of bromine in tetrachloromethane (carbon tetra chloride).

State what do you observe when:
Sulphur burns.

How would you distinguish between Zn²⁺ and Pb²⁺ ions, using ammonium hydroxide solution?

Copy and complete the following table which refers to the action of heat on some carbonates:

Write the observation, and balanced equation for the following reaction:
Sodium hydroxide is added dropwise to a solution of zinc sulphate, till it is in excess.

What would you observe in the following case:

Ammonium hydroxide is first added in a small quantity and then in excess to a solution of copper sulphate.

Write the observation, and balanced equation for the following reaction:
Excess of ammonium hydroxide is added to a substance, obtained by adding hydrochloric acid to silver nitrate solution.

Write the observation, and balanced equation for the following reaction:
Moist starch iodide paper is placed at the mouth of a test tube containing chlorine gas.

Write the observation, and balanced equation for the following reaction:
A paper dipped in potassium permanganate solution is placed at the mouth of a test tube, containing sulphur dioxide gas.

Sodium hydroxide solution is added first in a small quantity, then in excess to the aqueous salt solutions of copper (II) sulphate, zinc nitrate, lead nitrate, calcium chloride and iron (III) sulphate. Copy the following table and write the colour of the precipitate in (i) to (v) and the nature of the precipiatate (soluble or insoluble) in (vi) to (x)

The questions (i) to (v) refer to the following salt solutions listed A to F :
A. Copper nitrate
B. Iron (II) sulphate
C. Iron (III) chloride
D. Lead nitrate
E. Magnesium sulphate
F. Zinc chloride
(i) Which two solutions will give a white precipitate when treated with dilute hydrochloric acid followed by barium chloride solution/
(ii) Which two solutions will give a white precipitate when treated with dilute nitric acid followed by silver nitrate solution?
(iii) Which solution will give a white precipitate when either dilute hydrochloric acid or dilute sulphuric acid is added to it?
(iv) Which solution becomes a deep/inky blue colour when excess of ammonium hydroxide is added to it?
(v) Which solution gives a white precipitate with excess ammonium hydroxide?

Match the following :

Choose the correct answer:
The metal oxide which can react with acid as well as alkali is:

Identify the substance P based on the information given below:
The deliquescent salt P, turns yellow on dissolving in water, and gives a reddish brown precipitate with sodium hydroxide solution.

Identify the substance Q based on the information given below:
The white crystalline solid Q is soluble in water. It liberates a pungent smelling gas when heated with sodium hydroxide solution.

Identify the substance ‘R’ based on the information given below:

The pale green solid ‘R’ turns reddish brown on heating. Its aqueous solution gives a white precipitate with barium chloride solution. The precipitate is insoluble in mineral acids.

Give one chemical test to distinguish between the following pair of compounds:

Zinc sulphate solution and Zinc chloride solution

Give one chemical test to distinguish between the following pair of compounds:

Iron (II) chloride solution and iron (III) chloride solution

From the list given below, select the word(s) required to complete the blanks (i) to (v) in the following passage:

Note: words chosen from the list are to be used only once. Write only the answers. Do not copy the passage.

[reddish brown, ammonium, nitrogen dioxide, hydroxyl, dirty green, ammonia, acidic, alkaline]
Nitrogen and hydrogen combine in the presence of a catalyst to give (i) ______ gas. When the above mentioned gas is passed through water it forms a solution which will be (ii) ______ in nature and the solution contains (iii) ______ ions and (iv) ______ ions. The above solution when added to iron (II) sulphate solution gives a (v) ______ coloured precipitate of iron (II) hydroxide.

Write the equation for the following reaction :
Zinc oxide is treated with sodium hydroxide solution.

Choose the correct answer from the options given below :
Hydroxide of this metal is soluble is sodium hydroxide solution

Choose the correct answer from the options given below :
When dilute sulphuric acid reacts with iron sulphide, the gas evolved is _______

State two relevant observation of the following:
Ammonium hydroxide solution is added to copper (II) nitrate solution in small quantities and then in excess

State two relevant observations of the following:

Ammonium hydroxide solution is added to zinc nitrate solution in minimum quantities and then in excess.

Distinguish between the following pair of compound using the test given within bracket.

Iron (II) sulphate and iron (III) sulphate (using ammonium hydroxide)

Distinguish between the given pair of compounds using the test given within brackets:

A lead salt and a zinc salt (using excess ammonium hydroxide)

State your observations when ammonium hydroxide solution is added drop by drop and then in excess to the following solution:

Copper sulphate solution

State your observations when ammonium hydroxide solution is added drop by drop and then in excess to the following solution:

Zinc sulphate solution

Potassium sulphite on reacting with hydrochloric acid releases ______ gas.

Choose the correct answer from the options given below :
A chloride which forms a precipitate that is soluble in excess of ammonium hydroxide is :

The salt solution which does not react with ammonium hydroxide is ______.

Write balanced equation reaction of sodium hydroxide solution with iron (III) chloride solution.

Write a balanced equation for the preparation of the following salts:

Copper sulphate from copper carbonate.

Write a balanced equation for the preparation of the following salt:

Zinc carbonate from zinc sulphate.

Write a balanced chemical equation for each of the following reactions :  
 Action of dilute sulphuric acid on sodium hydroxide. 

Write a balanced chemical equation for each of the following reactions :
Action of dilute sulphuric acid on zinc sulphide. 

Give a balanced equation:

Ammonium hydroxide is added to ferrous sulphate solution.

 State one observation for each of the following  :
 A small piece of zinc is added to dilute hydrochloric acid 

State one observation for the following:

Lead nitrate is heated strongly in a test tube.

 Distinguish between the following pairs of compounds using the reagent given in the bracket.
Ferrous sulphate solution and ferric sulphate solution. (Using sodium hydroxide solution) 

 Identify the substance underlined: 
The dilute acid which is an oxidizing agent. 

State one relevant observation for the following reaction.

Addition of excess ammonium hydroxide into copper sulphate solution.

Write a balanced chemical equation for the following:

Reaction of lead nitrate solution with ammonium hydroxide.

______ is a white precipitate that is soluble in excess of Ammonium hydroxide solution.

State one relevant observation for the following:

To the copper nitrate solution, initially, few drops of sodium hydroxide solution is added and then added in excess.

Choose the answer from the list which fits in the description:

[CCl₄, PbO, NaCl, CuO, NH₄Cl]

1. A compound which undergoes thermal dissociation.
2. An amphoteric oxide.
3. A compound which is a non-electrolyte.

The metal hydroxide which reacts with both acids and alkalis to form salt and water is ______.