Which of the following statements is-are correct about the following reactions-I- C 6 H 12 O 6 6C-6 H 2 OII- H 2 SO dil -ZnC O 3 - Zn 2- -C O 2 -S O 4 2- - H 2 OIII- H 2 S O 4 dil -Zn- Zn 2- - H 2 -S O 4 2-IV- 5 H 2 S O 4 conc -4Zn- H 2 S-4 Zn 2- -4S O 4 2- -4 H 2 O

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Oxidizing Nature of Sulphuric Acid

Which of the ...

Question

Which of the following statements is/are correct about the following reactions?
I. $C_{6} H_{12} O_{6} H_{2} S O_{4} (c o n c) - ----------- \to 6 C + 6 H_{2} O$
II. $H_{2} S O (d i l) + Z n C O_{3} ⟶ {Z n}^{2 +} + C O_{2} + S O_{4}^{2 -} + H_{2} O$
III. $H_{2} S O_{4} (d i l) + Z n ⟶ {Z n}^{2 +} + H_{2} + S O_{4}^{2 -}$
IV. $5 H_{2} S O^{4} (c o n c) + 4 Z n ⟶ H_{2} S + 4 {Z n}^{2 +} + 4 S O_{4}^{2 -} + 4 H_{2} O$

In reaction (I),

H_{2} S O_{4}

acts as a dehydration agent.

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In reaction (II),

H_{2} S O_{4}

acts as an acid.

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In reaction (III),

H_{2} S O_{4}

acts both as an acid and an oxidising agent.

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In reaction (IV),

H_{2} S O_{4}

acts as an oxidising agent.

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Solution

The correct options are
A In reaction (I), $H_{2} S O_{4}$ acts as a dehydration agent.
B In reaction (III), $H_{2} S O_{4}$ acts both as an acid and an oxidising agent.
C In reaction (II), $H_{2} S O_{4}$ acts as an acid.
D In reaction (IV), $H_{2} S O_{4}$ acts as an oxidising agent.
$A :$ As glucose releases $6$ mol of $H_{2} O$ by the action of Conc. $H_{2} S O_{4}$ . Hence, a dehydration agent.
$B :$ As dil $H_{2} S O_{4}$ releases its $2 H^{+}$ to form water.
$C :$ As dil $H_{2} S O_{4}$ releases its $2 H^{+}$ to form $H_{2}$ . Hence it acts as an acid. As $Z n$ is oxidised to $Z n^{2 +}$ , hence $H_{2} S O_{4}$ acts as an oxidising agent also.
$D :$ As $Z n$ is oxidised to $Z n^{2 +}$ hence $H 2_{S} O_{4}$ acts as an oxidising agent.

Suggest Corrections

Similar questions

Q. In which of the following reactions does conc.

H_{2} S O_{4}

act as an oxidising agent?

Q. Question 3

Which of the following statements about the given reaction are correct?

3 Fe(s) + 4 H_{2} O(g) \to {Fe}_{3} O_{4} (s) + 4 H_{2} (g)

(i) Iron metal is getting oxidised
(ii) Water is getting reduced
(iii) Water is acting as reducing agent
(iv) Water is acting as oxidizing agent

(a) (i), (ii) and (iii)
(b) (iii) and (iv)
(c) (i), (ii) and (iv)
(d) (ii) and (iv)

Q. In which of the following reaction (s)

H_{2} S O_{4}

can't act as an oxidising agent?

Q. In the following reactions, identify the oxidising agent and the reducing agent.

4 H C l + M n O_{2} \to M n C l_{2} + 2 H_{2} O + C l_{2}

Question 6

Consider the reactions

(i) $H_{2} O_{2} + 2 H I \to I_{2} + 2 H_{2} O$
(ii) $H O C l + H_{2} O_{2} \to H_{3} O^{+} C l^{-} + O_{2}$

Which of the following statements is correct about $H_{2} O_{2}$ with reference to these reactions? Hydrogen peroxide is ........

(a) an oxidising agent in both (i) and (ii)

(b) an oxidising agent in (i) and reducing agent in (ii)

(d) a reducing agent in both (i) and (ii)

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Which of the following statements is/are correct about the following reactions?I. C6H12O6H2SO4(conc)−−−−−−−−−−−−→6C+6H2OII. H2SO(dil)+ZnCO3⟶Zn2++CO2+SO2−4+H2OIII. H2SO4(dil)+Zn⟶Zn2++H2+SO2−4IV. 5H2SO4(conc)+4Zn⟶H2S+4Zn2++4SO2−4+4H2O