S.P. Singh solutions for कन्साइस केमिस्ट्री [अंग्रेजी] कक्षा १० आईसीएसई chapter 11 - Study of Compounds D. Sulphuric Acid [Latest edition]

Comment, sulphuric acid is referred to as King of chemicals.

Comment, sulphuric acid is referred to as oil of vitriol.

Sulphuric acid is manufactured by the contact process.

Give two balanced equations to obtain SO₂ in this process.

Sulphuric acid is manufactured by the contact process.

Give the conditions for the oxidation of SO₂.

Sulphuric acid is manufactured by the contact process.

Name the catalyst used.

Sulphuric acid is manufactured by the contact process.

Why H₂SO₄ is not obtained by directly reacting SO₃ with water?

Sulphuric acid is manufactured by the contact process.

Name the chemical used to dissolve SO₃ and also name the product formed. Give all the main reactions to this process.

Why the impurity of arsenic oxide must be removed before passing the mixture of SO₂ and air through the catalytic chamber?

1. Name the catalyst which helps in the conversion of sulphur dioxide to sulphur trioxide in step C.
2. In the contact process for the manufacture of sulphuric acid, sulphur trioxide is not converted to sulphuric acid by reacting it with water. Instead a two-step procedure is used. Write the equations for the two steps involved in D.
3. What type of substance will liberate sulphur dioxide from sodium sulphite in step E?
4. Write the equation for the reaction by which sulphur dioxide is converted to sodium sulphite in step F.

The gas evolved when dilute sulphuric acid reacts with iron sulphide. 

In the given equation - \[\ce{H2S + H2SO4 → S + 2H2O + SO2}\]:

Identify the role played by conc. H₂SO₄.

Dilute sulphuric acid will produce a white precipitate when added to a solution of ______.

On passing SO₂ through chlorine water, the acid produced is ______.

When HCl is prepared by the reaction of NaCl with H₂SO₄ the property of H₂SO₄ exhibited is ______.

The catalyst preferred in contact process is ______.

The substance added to SO₃ to manufacture H₂SO₄ by contact process is ______.

The role of sulphuric acid in the reaction given below is:

\[\ce{S + 2H2SO4 -> 3SO2 + 2H2O}\]

Dilute H₂SO₄ and conc. H₂SO₄ can be distinguished by ______.

On adding conc. H₂SO₄ to cane sugar, the colour observed is ______.

The acid which produces charcoal from sugar is ______.

The substance which can be used as a drying as well as dehydrating agent is ______.

The compound formed by the oxidation of sulphur by nitric acid is:

P Sulphuric acid

Q Nitrogen dioxide

R Sulphur dioxide

Assertion (A): Sulphuric acid is known as the oil of vitriol.

Reason (R): Sulphuric acid was first obtained by heating crystals of green vitriol.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Assertion (A): V₂O₅ or Pt is used in the catalytic oxidation of sulphur dioxide.

Reason (R): The catalytic oxidation of SO₂ is an exothermic reaction, so it requires to be heated to about 450°C only in the beginning.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Assertion (A): Sulphuric acid when dissolved in water forms a basic salt.

Reason (R): Sulphuric acid ionises in two stages, it is a dibasic acid.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Assertion (A): Pure sulphuric acid is almost a non-conductor of electricity.

Reason (R): Dilute sulphuric acid is a good conductor of electricity.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Assertion (A): Impurity of arsenic oxide must be removed before passing the mixture of SO₂ and air through the catalytic chamber.

Reason (R): Arsenic oxide poisons the catalyst.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Assertion (A): Concentrated sulphuric acid is kept in air tight bottles.

Reason (R): Air contains impurities, therefore H₂SO₄ will get spoiled.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Assertion (A): Sulphuric acid acts as an oxidising agent.

Reason (R): Sulphuric acid produces hydrogen on reacting with zinc.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Some properties of sulphuric acid are listed below. Choose the property A, B, C or D which is responsible for the reactions (i) to (v). Some properties may be repeated:

1. Typical acid
2. Dehydrating agent
3. Non-volatile acid
4. Oxidizing agent

1. \[\ce{C12H22O11 + nH2SO4 -> 12C + 11H2O + nH2SO4}\]
2. \[\ce{S + 2H2SO4 -> 3SO2 + 2H2O}\]
3. \[\ce{NaCl + H2SO4 -> NaHSO4 + HCl}\]
4. \[\ce{CuO + H2SO4 -> CuSO4 + H2O}\]
5. \[\ce{Na2CO3 + H2SO4 -> Na2SO4 + H2O + CO2}\]

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. \[\ce{Zn + 2H2SO4 [conc.] -> ZnSO4 + SO2 + 2H2O}\]

Fill in the blanks. Choose from the following:

[oleum, two, three, acid, black, white, lead nitrate, ethene, sulphate, barium chloride solution, sulphur dioxide, normal]

Sulphur can be oxidised to ______ by conc. sulphuric acid.

Fill in the blanks. Choose from the following:

[oleum, two, three, acid, black, white, lead nitrate, ethene, sulphate, barium chloride solution, sulphur dioxide, normal]

Conc. sulphuric acid convert ethanol to ______.

Fill in the blanks. Choose from the following:

[oleum, two, three, acid, black, white, lead nitrate, ethene, sulphate, barium chloride solution, sulphur dioxide, normal]

Sulphate ion can be tested by ______ or ______.

Fill in the blanks. Choose from the following:

[oleum, two, three, acid, black, white, lead nitrate, ethene, sulphate, barium chloride solution, sulphur dioxide, normal]

Sulphur trioxide reacts with conc. sulphuric acid to form ______.

Fill in the blanks. Choose from the following:

[oleum, two, three, acid, black, white, lead nitrate, ethene, sulphate, barium chloride solution, sulphur dioxide, normal]

The basicity of sulphuric acid is ______. It can form ______ salt and ______ salt.

Fill in the blanks. Choose from the following:

[oleum, two, three, acid, black, white, lead nitrate, ethene, sulphate, barium chloride solution, sulphur dioxide, normal]

Metal sulphate solution gives ______ precipate with ______ solution.

The following is the typical property of dilute acid. Complete it by inserting suitable words:

\[\ce{Active metal + Acid ->  \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]

The following is the typical property of dilute acid. Complete it by inserting suitable words:

\[\ce{Base + Acid ->  \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]

The following is the typical property of dilute acid. Complete it by inserting suitable words:

\[\ce{Carbonate/hydrogen carbonate + Acid ->  \underline{\phantom{.......}} + \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]

The following is the typical property of dilute acid. Complete it by inserting suitable words:

\[\ce{Sulphite/hydrogen sulphite + Acid ->  \underline{\phantom{.......}} + \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]

The following is the typical property of dilute acid. Complete it by inserting suitable words:

\[\ce{Sulphide + Acid ->  \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]

Name the acid formed when sulphur dioxide dissolves in water.

Name the gas released when sodium carbonate is added to a solution of sulphur dioxide.

Identify the following substance:

Liquid E can be dehydrated to produce ethene.

Name the gas evolved [formula is not acceptable]. The gas that can be oxidised to sulphur.

Name the solution which liberates sulphur dioxide gas from sodium sulphite.

Name the gas produced on the reaction of dilute sulphuric acid with a metallic sulphide.

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

Identify the acid in the following case:

The acid which produces sugar charcoal from sugar.

Identify the acid in the following case:

The acid on mixing with lead nitrate solution produces a white precipitate, which is insoluble even on heating.

What is the name given to the salts of sulphurous acid?

What is the name given to the salts of sulphuric acid?

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

What property of conc. H₂SO₄ allows it to be used in the preparation of HCl and HNO₃ acids.

State the property of sulphuric acid shown by the reaction of conc. sulphuric acid when heated with potassium nitrate.

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

State the property of sulphuric acid shown by the reaction of conc. sulphuric acid when heated with ethanol.

Copy and complete the following table relating to an important industrial process and its final output.

Copy and complete the following table:

Give reasons for the following:

Sulphuric acid forms two types of salts with NaOH.

Give reasons for the following:

A piece of wood becomes black when concentrated sulphuric acid is poured on it.

Give reasons for the following:

Brisk effervescence is seen when oil of vitriol is added to sodium carbonate.

Why is water not added to concentrated H₂SO₄ in order to dilute it?

Why is concentrated sulphuric acid kept in air tight bottles?

Why is H₂SO₄ is not used as a drying agent for H₂S?

Why is sulphuric acid used in the preparation of HCl and HNO₃? Give equations in both cases.

What would you observe in the following case:

Sugar crystals are added to a hard glass test tube containing concentrated sulphuric acid.

State one appropriate observation when conc. H₂SO₄ is added to a crystal of hydrated copper sulphate.

Write balanced chemical equations for the action of dilute sulphuric acid on sodium sulphite.

Give a balanced equation for the manufacture of sulphuric acid by the contact process.

Give a balanced equation for heating sulphur with conc. sulphuric acid.

State one appropriate observation of the following:

Dehydration of concentrated sulphuric acid with sugar crystals.

Write a balanced equation for the following:

Action of concentrated sulphuric acid on carbon.

Write the equation for dil. H₂SO₄ and barium chloride.

Why is water not added to concentrated H₂SO₄ in order to dilute it?

Give two balanced reactions of the type to show the following property of sulphuric acid:

Acidic nature

Give two balanced reactions of the type to show the following property of sulphuric acid:

Oxidising agent

Give two balanced reactions of the type to show the following property of sulphuric acid:

Dehydrating nature

Give two balanced reactions of the type to show the following property of sulphuric acid:

Non-volatile nature

Give a chemical test to distinguish between dilute sulphuric acid and dilute hydrochloric acid (using lead nitrate solution).

Give a chemical test to distinguish between dilute sulphuric acid and conc. sulphuric acid.

Write a balanced chemical equation:

When hot and concentrated sulphuric acid reacts with the sulphur.

Write a balanced chemical equation:

When hot and concentrated sulphuric acid reacts with the NaOH.

Write a balanced chemical equation:

When hot and concentrated sulphuric acid reacts with the sugar.

Write a balanced chemical equation:

When hot and concentrated sulphuric acid reacts with the carbon.

Write a balanced chemical equation:

When hot and concentrated sulphuric acid reacts with the copper.

Why is concentrated sulphuric acid kept in air tight bottles?

Why is H₂SO₄ is not used as a drying agent for H₂S?

Why is sulphuric acid used in the preparation of HCl and HNO₃? Give equations in both cases.

What property of conc. H₂SO₄ is made use of in the following case? Give an equation for the reaction in this case:

In the production of HCl gas when it reacts with chloride.

What property of conc. H₂SO₄ is made use of in the following case? Give an equation for the reaction in this case:

In the preparation of CO and HCOOH.

What property of conc. H₂SO₄ is made use of in the following case? Give an equation for the reaction in this case:

As a source of hydrogen by diluting it and adding a strip of magnesium.

What property of conc. H₂SO₄ is made use of in the following case? Give an equation for the reaction in this case:

In the preparation of sulphur dioxide by warming a mixture of conc. sulphuric acid and copper turnings.

What property of conc. H₂SO₄ is made use of in the following case? Give an equation for the reaction in this case:

Hydrogen chloride gas is passed through concentrated sulphuric acid.

What property of conc. H₂SO₄ is made use of in the following case? Give an equation for the reaction in this case:

It’s reaction with ethanol.

What property of conc. H₂SO₄ is made use of in the following case? Give an equation for the reaction in this case:

It’s reaction with carbon.

What is the name given to the salts of sulphurous acid?

What is the name given to the salts of sulphuric acid?

Give reasons for the following:

Sulphuric acid forms two types of salts with NaOH.

Give reasons for the following:

A piece of wood becomes black when concentrated sulphuric acid is poured on it.

Give reasons for the following:

Brisk effervescence is seen when oil of vitriol is added to sodium carbonate.

Copy and complete the following table:

The following is the typical property of dilute acid. Complete it by inserting suitable words:

\[\ce{Active metal + Acid ->  \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]

The following is the typical property of dilute acid. Complete it by inserting suitable words:

\[\ce{Base + Acid ->  \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]

The following is the typical property of dilute acid. Complete it by inserting suitable words:

\[\ce{Carbonate/hydrogen carbonate + Acid ->  \underline{\phantom{.......}} + \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]

The following is the typical property of dilute acid. Complete it by inserting suitable words:

\[\ce{Sulphite/hydrogen sulphite + Acid ->  \underline{\phantom{.......}} + \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]

The following is the typical property of dilute acid. Complete it by inserting suitable words:

\[\ce{Sulphide + Acid ->  \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]

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.

Some properties of sulphuric acid are listed below. Choose the property A, B, C or D which is responsible for the reactions (i) to (v). Some properties may be repeated:

1. Typical acid
2. Dehydrating agent
3. Non-volatile acid
4. Oxidizing agent

1. \[\ce{C12H22O11 + nH2SO4 -> 12C + 11H2O + nH2SO4}\]
2. \[\ce{S + 2H2SO4 -> 3SO2 + 2H2O}\]
3. \[\ce{NaCl + H2SO4 -> NaHSO4 + HCl}\]
4. \[\ce{CuO + H2SO4 -> CuSO4 + H2O}\]
5. \[\ce{Na2CO3 + H2SO4 -> Na2SO4 + H2O + CO2}\]

Name the acid formed when sulphur dioxide dissolves in water.

Name the gas released when sodium carbonate is added to a solution of sulphur dioxide.

Dilute sulphuric acid will produce a white precipitate when added to a solution of ______.

Identify the following substance:

Liquid E can be dehydrated to produce ethene.

Copy and complete the following table relating to an important industrial process and its final output.

Making use only of substances chosen from those given below:

(Dilute sulphuric acid, sodium carbonate, Zinc, sodium sulphite, Lead, calcium carbonate)

Give the equation for the reaction by which you could obtain hydrogen.

Making use only of substances chosen from those given below:

(Dilute sulphuric acid, sodium carbonate, Zinc, sodium sulphite, Lead, calcium carbonate)

Give the equation for the reaction by which you could obtain sulphur dioxide.

Making use only of substances chosen from those given below:

(Dilute sulphuric acid, sodium carbonate, Zinc, sodium sulphite, Lead, calcium carbonate)

Give the equation for the reaction by which you could obtain carbon dioxide.

Making use only of substances chosen from those given below:

(Dilute sulphuric acid, sodium carbonate, Zinc, sodium sulphite, Lead, calcium carbonate)

Give the equation for the reaction by which you could obtain zinc carbonate (two steps required).

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

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)?

Write the equation for dil. H₂SO₄ and barium chloride.

Write the equation for dil. H₂SO₄ and sodium sulphide.

Name the gas evolved [formula is not acceptable]. The gas that can be oxidised to sulphur.

Write the equation of the following reaction:

Sulphur is heated with concentrated sulphuric acid.

Write the reaction of conc. H₂SO₄ with sugar.

Give a balanced equation for the conversion of zinc oxide to zinc sulphate.

The solution which liberates sulphur dioxide gas, from sodium sulphite.

What would you observe in the following case:

Sugar crystals are added to a hard glass test tube containing concentrated sulphuric acid.

The gas evolved when dilute sulphuric acid reacts with iron sulphide. 

Write balanced chemical equations for the action of dilute sulphuric acid on sodium sulphite.

Give a balanced equation for the manufacture of sulphuric acid by the contact process.

State the property of sulphuric acid shown by the reaction of conc. sulphuric acid when heated with potassium nitrate.

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

State the property of sulphuric acid shown by the reaction of conc. sulphuric acid when heated with ethanol.

Name the gas produced on the reaction of dilute sulphuric acid with a metallic sulphide.

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. \[\ce{Zn + 2H2SO4 [conc.] -> ZnSO4 + SO2 + 2H2O}\]

Give a balanced equation for the reaction:

Zinc sulphide and dilute sulphuric acid.

State one appropriate observation when conc. H₂SO₄ is added to a crystal of hydrated copper sulphate.

In the given equation \[\ce{S + 2H2SO4 -> 3SO2 + 2H2O}\]. Identify the role played by conc. H₂SO₄.

State one appropriate observation of the following:

Dehydration of concentrated sulphuric acid with sugar crystals.

Identify the substance underlined:

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

Write a balanced equation for the following:

Action of concentrated sulphuric acid on carbon.

Distinguish between the following pair of compounds using the test given with brackets:

Dilute sulphuric acid and dilute hydrochloric acid (using barium chloride solution)

State the conditions required for the following reactions to take place:

The conversion of sulphur dioxide to sulphur trioxide.

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

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

Identify the acid in the following case:

The acid which produces sugar charcoal from sugar.

Identify the acid in the following case:

The acid on mixing with lead nitrate solution produces a white precipitate, which is insoluble even on heating.