Lakhmir Singh solutions for केमिस्ट्री [अंग्रेजी] कक्षा १० आईसीएसई chapter 11 - Study of Compounds: Sulphuric Acid [Latest edition]

State whether the following statement is True or False.

The mixture of sulphur dioxide and air comes in contact with the catalysts in the contact tower.

State whether the following statement is True or False.

Vanadium pentoxide is more efficient than platinum.

State whether the following statement is True or False.

A temperature of 300 to 450°C gives the best yield in the contact process.

______ process is used to prepare sulphuric acid on a large scale.

SO₃ + H₂SO₄ → ______

Sulphuric acid is called ______ of chemicals.

Excess of oxygen in the contact process leads to increased production of ______.

Sulphuric acid can be obtained by adding water to ______.

Conditions favourable for the contact process are ______.

Give the preparation of sulphuric acid in the earlier times.

Draw the structure of the following:

H₂SO₄

Write the molecular formula of sulphuric acid.

How can sulphuric acid be prepared from sulphur?

What are the conditions required to carry out the contact process?

State whether the following statement is True or False.

Dilute acid cannot act has an oxidising agent.

State whether the following statement is True or False.

Carbohydrates such as glucose, sugar, and cellulose on reaction with conc. H₂SO₄ give a black spongy mass of carbon.

State whether the following statement is True or False.

Concentrated H₂SO₄ is used in making lead batteries.

Ionisation of sulphuric acid occurs in ______ steps.

Carbon obtained on adding conc. H₂SO₄ to cane sugar is called ______.

CH₃COONa + H₂SO₄ → ______ + ______

Which of the following gas is evolved when concentrated H₂SO₄ reacts with metal carbonate?

Dilute H₂SO₄ is a/an ______.

Iron sulphide on reaction with dil. H₂SO₄ gives ______.

Comment on the conductivity of concentrated sulphuric acid.

What is the basicity of sulphuric acid. Give the equations involved?

What happens when concentrated sulphuric acid is added to carbonates?

Sulphuric acid is used in the preparation of insoluble sulphate salts. Explain.

Suggest a method to prepare pure carbon using sulphuric acid and an organic compound.

How is sulphuric acid useful in the extraction of metals?

As we know that sulphuric acid is usually regarded as the King of Chemicals. It has a variety of applications in different industries. In order to get a basic understanding of how much commercially significant sulphuric acid is, you are required to do online research and make a PowerPoint presentation discussing the following points:

• Top chemical companies in India and around the world that produce sulphuric acid.
• Major industrial sectors where sulphuric acid is consumed.
• The main products in our daily life, in the manufacture of which sulphuric acid acts as a key ingredient.

True or False.

The catalyst is heated only once in the beginning of the contact process at the temperature of 450°C.

True or False.

Sulphuric acid is a colourless gas and has a pungent smell in the contact process.

True or False.

To remove the impurities, the mixture is passed through the converter.

True or False.

Concentrated H₂SO₄ removes even chemically combined water from compounds.

True or False.

Pure acid conducts electricity.

S + ______ → H₂SO₄ + NO₂ + 2H₂O

A pressure of ______ to ______ atm is maintained in the Contact process.

Pb(NO₃)₂ + H₂SO₄ → PbSO₄ + ______

Thermal decomposition of conc. H₂SO₄ gives ______ oxygen.

Production of sulphur trioxide is ______.

Sulphur in the first step of Contact process can be produced by ______.

The mixture that is diluted to obtain the sulphuric acid is ______.

Initially sulphuric acid was obtained from ______.

Oleum is the common name of ______.

Which of the following is not a property of conc. sulphuric acid?

Which of the following can be used to identify sulphuric acid?

Concentrated sulphuric acid on reaction with copper evolves ______.

Match the following.

In what forms is sulphuric acid found naturally?

Name the catalyst used to manufacture H₂SO₄ by contact process.

Explain the oxidising behaviour of conc. sulphuric acid.

What is the action of conc. sulphuric acid on potassium chloride?

Give two tests to identify sulphuric acid.

Discuss the dehydrating property of conc. sulphuric acid on sulphate salts.

Discuss the dehydrating property of conc. sulphuric acid on sugar.

Discuss the dehydrating property of conc. sulphuric acid on organic compounds.

Name the process used for the large scale manufacture of sulphuric acid.

Which property of sulphuric acid accounts for its use as a dehydrating agent ?

Concentrated sulphuric acid is both an oxidizing agent and a non-volatile acid. Write one equation. Each illustrates the above-mentioned properties of sulphuric acid.

Write the equation for the reaction:

Aluminium nitride and Water.

Write the equation for the following reaction:

Sulphur dioxide and water.

State one chemical test between the following pair:

Sodium carbonate and sodium sulphite

State one chemical test between the following pair:

Ferrous nitrate and lead nitrate

State one chemical test between the following pair:

Manganese dioxide and copper (II) oxide

Give one equation to show the following property of sulphuric acid:

Dehydrating property

Give one equation to show the following property of sulphuric acid:

Acidic nature

Give one equation to show the following property of sulphuric acid:

As a non-volatile acid

Give a balanced chemical equation for the action of sulphuric acid on the following:

Potassium hydrogen carbonate

Give a balanced chemical equation for the action of sulphuric acid on the following:

Sulphur

In the contact process for the manufacture of sulphuric acid give the equations for the conversion of sulphur trioxide to sulphuric acid.

A, B, C and D summarise the properties of sulphuric acid depending on whether it is dilute or concentrated.
A = Typical acid property
B = Non-Volatile acid
C = Oxidising agent
D = Dehydrating agent

Choose the property (A, B, C or D) depending on which is relevant to each of the following :
(i) Preparation of hydrogen chloride gas
(ii) Preparation of copper sulphate from copper oxide
(iii) Action of cone, sulphuric acid on sulphur

Write balanced chemical equations to show how SO₃ is converted to Sulphuric acid in the contact process.

Write balanced chemical equation to show :
The oxidizing action of conc.sulphuric acid on carbon

Write balanced chemical equation to show :
The behavior of H₂SO₄ as an acid when it reacts with magnesium.

Write balanced chemical equation to show :
The dehydrating property of conc. sulphuric acid

Which property of sulphuric acid is shown by the reaction of the concentrated sulphuric acid with ethanol?

Which property of sulphuric acid is shown by the reaction of the concentrated sulphuric acid with carbon?

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.

Name the acid used for the preparation of hydrogen chloride gas in the laboratory. Why is this particular acid preferred to other acids?

Write the balanced chemical equation for the laboratory preparation of hydrogen chloride gas.

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. 

Distinguish between the following pairs of compounds using the reagent given in the bracket.
Mangenese dioxide and copper (II) oxide. (using concentrated HCl) 

 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) 

Distinguish between the following pairs of compounds using the reagent given in the bracket.
Dilute hydrochloric acid and dilute sulphuric acid. (Using lead nitrate solution) 

Complete the following equations : 
  S + conc.HNO₃ → 

Complete the following equations:

\[\ce{C + conc{.} H2SO4 ->}\]

Complete the following equation:

\[\ce{Cu + dil{.} HNO3 ->}\]

What happens when conc. sulphuric acid is added to active metals? Explain using a suitable reaction.

What happens when conc. sulphuric acid is added to oxides? Explain using a suitable reaction.

Discuss how sulphuric acid can be obtained by the contact process.

Give reason:

V₂O₅ is used instead of platinum as a catalyst in the contact process.

Give reason:

High pressure is favourable for the preparation of sulphuric acid in contact process.

Give reason:

Why water is not added to acid.

Give reason:

Why sulphuric acid can cause burns on skin.

Give any four uses of sulphuric acid.

Some properties of sulphuric acid are listed below. Choose the property A, B, C or D which is responsible for the reaction (a) to (e). Some properties may be repeated.
A. Acid
B. Dehydrating agent
C. Non-volatile acid
D. Oxidizing agent

(a) \[\ce{C12H22O11 + nH2SO4 -> 12C + 11H2O + nH2SO4}\]
(b) \[\ce{S + 2H2SO4 -> 3SO2 + 2H2O}\]
(c) \[\ce{NaCl + 2H2SO4 -> NaHSO4 + HCl}\]
(d) \[\ce{CuO + 2H2SO4 -> CuSO4 + H2O}\] 
(e) \[\ce{Na2CO3 + H2SO4 -> Na2SO4 + H2O + CO2}\]

Write the balanced chemical equation for the following conversion:
Lead sulphate from lead nitrate solution and dilute sulphuric acid.

Write the balanced chemical equation for the following conversion:
Copper sulphate from copper and concentrated sulphuric acid.

Write a balanced equation for the following reaction:

Lead chloride from lead nitrate solution and sodium chloride solution.

Write the balanced chemical equation for the following conversion:
Ammonium sulphate from ammonia and dilute sulphuric acid.

Write a balanced equation for the following reaction:

Sodium chloride from sodium carbonate solution and dilute hydrochloric acid.

HCl, HNO₃ and H₂SO₄ are formulae of three compounds. Which of these compounds has the highest boiling point and which has the lowest?

Dilute hydrochloric acid and dilute sulphuric acid are both colourless solutions. How will the addition of barium chloride solution to each help to distinguish between the two?

Copy and complete the following table relating to important industrial processes. Output refers to the product of the process, not the intermediate steps.

What is the property of concentrated sulphuric acid (H₂SO₄) which allows it to be used in the preparation of hydrogen chloride (HCl) and nitric acid (HNO₃)?

What property of hydrogen chloride is demonstrated when it is collected by downward delivery (upward displacement) ?

Why is hydrogen chloride not collected over water?

What is the property of nitric acid which allows it to react with copper?

What property of conc. H₂SO₄ is used in the action when sugar turns black in its presence?

Write the equation for the reaction of dilute nitric acid with copper.

Write the equation for the following reaction:

Dilute sulphuric acid and barium chloride.

Write a balanced chemical equation.

Sodium thiosulphate is reacted with dilute hydrochloric acid.

Write the equation for the reaction between hydrochloric acid of the following:

Lead nitrate solution

Write the equation for the following reaction:

Dilute sulphuric acid and sodium sulphide.

Write the equation of the following reaction:

Sulphur is heated with concentrated sulphuric acid.

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

Give the equation for the reaction:

Ammonium chloride is heated with sodium hydroxide.

Write the equation of the following reaction :
Concentrated sulphuric acid is poured over sugar

Write the equation for the following reaction:

Magnesium sulphate solution is mixed with barium chloride solution.

Give the equation for the preparation of the following salt from the starting material given.
Copper sulphate from copper (II) oxide

Give the equation for the preparation of the following salt from the starting material given.
Iron (III) Chloride from Iron

Give the equation for the preparation of the following salt from the starting material given.
Potassium sulphate from potassium hydroxide solution

Give the equation for the preparation of the following salt from the starting material given.
Lead chloride from lead carbonate (two equations)

Give equations for the following conversions A to E.

Give the balanced equation for dilute nitric acid and copper carbonate.

Give a balanced equation for the reaction:

Conc. hydrochloric acid and potassium permanganate solution.

Give a balanced equation for the reaction:

Silver nitrate solution and sodium chloride solution.

Give a balanced equation for the reaction:

Zinc sulphide and dilute sulphuric acid.

With the help of equations, give an outline for the manufacture of sulphuric acid by the contact process.

What property of sulphuric acid is shown by the reaction of concentrated sulphuric acid when heated with potassium nitrate?

Which property of sulphuric acid is shown by the reaction of the concentrated sulphuric acid with carbon?

Some properties of sulphuric acid are listed below. Choose the role played by sulphuric acid as A, B, C or D which is responsible for the reactions (i) to (v). Some role/s may be repeated.

1. Dilute acid
2. Dehydrating agent
3. Non-volatile acid
4. Oxidising agent
   1. \[\ce{CuSO4 * 5H2O ->[conc. H2SO4] CuSO4 + 5H2O}\]
   2. \[\ce{S + 2H2SO4 [conc.] -> 3SO2 + 2H2O}\]
   3. \[\ce{NaNO3 + \underset{[conc.]}{H2SO4} ->[<200^\circ C] NaHSO4 + HNO3}\]
   4. \[\ce{MgO + H2SO4 -> MgSO4 + H2O}\]
   5. \[\ce{Zn + 2H2SO4 [conc.] -> ZnSO4 + SO2 + 2H2O}\]

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: Sodium sulphate

Choosing the substances from the list given below, write balanced chemical equations for the reactions which would be used in the laboratory to obtain the following salts:

Zinc carbonate

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: Copper sulphate.

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: lron(II) sulphate

Identify the following substance which is underlined:

An alkaline gas which produces dense white fumes when reacted with hydrogen chloride gas.

Identify the following substance which is underlined:

An acid which is present in vinegar.

Identify:

A gas which does not conduct electricity in the liquid state but conducts electricity when dissolved in water.

Identify the substance underlined:

A dilute mineral acid which forms a white precipitate when treated with barium chloride solution.

Identify the following substance which is underlined:

The element which has the highest ionisation potential.

 Copy and complete the following table which refers to the industrial method for the preparation of ammonia and sulphuric acid: 

Hydrogen chloride gas is prepared in the laboratory by the action of concentrated sulphuric acid on sodium chloride.

Give a balanced chemical equation for the above reaction.

Hydrogen chloride gas is prepared in the laboratory using concentrated sulphuric acid and sodium chloride. Answer the question that follow based on this reaction.

Why is concentrated sulphuric acid used instead of concentrated nitric acid?

Hydrogen chloride gas is prepared in the laboratory using concentrated sulphuric acid and sodium chloride. Answer the question that follow based on this reaction.