# Class 10 FRANK Solutions Chemistry Chapter 10 - Study of Sulphur Compound: Sulphuric Acid

Revise Frank Solutions for ICSE Class 10 Chemistry Chapter 10 Study of Sulphur Compounds: Sulphuric Acid at TopperLearning. Learn how sulphuric acid is prepared with our chapter solutions. Revise terms such as a dehydrating agent, oleum, hygroscopic substance etc. Also, learn to describe reactions that reveal that concentrated sulphuric acid is a dehydrating agent.

With our ICSE Class 10 Chemistry textbook solutions, learn the key differences between concentrated sulphuric acid and dilute sulphuric acid. Practising MCQs from our Frank Solutions is valuable. However, you can also use our Selina Chemistry solutions to prepare well and increase your final exam marks.

## Study of Sulphur Compound: Sulphuric Acid Exercise 249

### Solution 1

### Solution 2

### Solution 3

### Solution 4

## Study of Sulphur Compound: Sulphuric Acid Exercise 250

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### Solution 10

### Solution 11

## Study of Sulphur Compound: Sulphuric Acid Exercise 251

### Solution 12

(i) 2SO_{2} + O_{2}→ 2SO_{3}

(ii) Dehydration

(iii) SO_{3}

(iv) Fe(OH)_{3}

(v) Vanadium pentoxide

### Solution 13

(i) The catalyst used in contact process for the
manufacture of H_{2}SO_{4 }is ___________ or _________.

(ii) For the reaction SO_{2} + O_{2}⇌ SO_{3} + Heat, the favourable
conditions are _________ and __________.

(iii) Oil of vitriol is ** sulphuric acid**.

### Solution 1993-1

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## Study of Sulphur Compound: Sulphuric Acid Exercise 252

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## Study of Sulphur Compound: Sulphuric Acid Exercise 253

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## Study of Sulphur Compound: Sulphuric Acid Exercise 254

### Solution 2006-1

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### Solution 2007-2

(a) B

(b) D

(c) C

(d) A

(e) A

### Solution 2007-3

### Solution 2008-1

### Solution 2008-2

## Study of Sulphur Compound: Sulphuric Acid Exercise 255

### Solution 2009-1

### Solution 2010-1

(i) S + H_{2}SO_{4}→ 3SO_{2} + 2H_{2}O

(ii)

### Solution 2010-2

(i) Litmus turns blue to red, and then gets bleached.

(ii) Dry SO_{2} has no effect on dry red
rose petals.

(iii) Paper turns from pink to white.

### Solution 2011-1

Charring of sugar takes place. Sulphuric acid dehydrates sugar leaving behind carbon which is black.

### Solution 2011-2

(i) Formation of sulphur dioxide:

S + O_{2 }→ SO_{2}

Conversion of SO_{2} to
SO_{3}

Conversion of sulphur trioxide to oleum:

SO_{3} + H_{2}SO_{4}→ H_{2}S_{2}O_{7}

Dilution of oleum:

H_{2}S_{2}O_{7}
+ H_{2}O → 2H_{2}SO_{4}

(ii)

i. Non-volatile nature

ii. As an oxidising agent

### Solution 2013-1

(b) Oxidising agent

### Solution 2013-2

(i) When conc. H_{2}SO_{4} is added to a
crystal of hydrated copper sulphate, it removes water of crystallisation
from salt.

(ii) C_{12}H_{22}O_{11} + conc. H_{2}SO_{4}→ 6C + 6H_{2}O

### Solution 2014-1

(i) Dehydrating property of sulphuric acid:

H_{2}SO_{4} has a great affinity for
water, and therefore, it acts as a dehydrating agent.

(ii) Acidic nature of sulphuric acid:

It acts as a strong dibasic acid.

It reacts with metals, metal oxides, metal hydroxides and carbonates to form metallic sulphates and hydrogen at ordinary temperature.

Mg + H_{2}SO_{4}→ MgSO_{4} + H_{2}↑

CuO + H_{2}SO_{4
}→
CuSO_{4} + H_{2}O

2NaOH + H_{2}SO_{4}→ Na_{2}SO_{4} + 2H_{2}O

ZnCO_{3} + H_{2}SO_{4}→
ZnSO_{4} + H_{2}O + CO_{2}↑

(iii) As a non-volatile acid:

It has a high boiling point, so it is used to prepare
volatile acids such as HCl, HNO_{3} and acetic acid from their salts.

NaCl + H_{2}SO_{4}→ NaHSO_{4} + HCl

NaNO_{3 }+ H_{2}SO_{4 }→ NaHSO_{4} + HNO_{3}

CH_{3}COONa + H_{2}SO_{4 }→ NaHSO_{4} + CH_{3}COOH

### Solution 2015-1

(i)

1. Action of sulphuric acid on potassium hydrogen carbonate

2KHCO_{3} + H_{2}SO_{4}→ K_{2}SO_{4} + 2H_{2}O
+ 2CO_{2}↑

2. Action of sulphuric acid on sulphur

S + 2H_{2}SO_{4}→ 3SO_{2} + 2H_{2}O

(ii) In the contact process for the manufacture of sulphuric acid, the equations for the conversion of sulphur trioxide to sulphuric acid are

SO_{3} + H_{2}SO_{4}→ H_{2}S_{2}O_{7}

(oleum or pyrosulphuric acid)

H_{2}S_{2}O_{7} + H_{2}O
→
2H_{2}SO_{4}

## Study of Sulphur Compound: Sulphuric Acid Exercise 256

### Solution 2016-1

(i) B

(ii) A

(iii) C

### Solution 2017-1

(i)

(ii)

(iii)