Consider the reaction : H_2… - JEE Main 2014 Chemistry PYQ

JEE Main 2014 — Chemistry Physical Chemistry

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Consider the reaction :

${\text{H}}_{2} {\text{SO}}_{ 3 ( \text{aq} ) } + {\text{Sn}}_{( \text{aq} )}^{ 4 + } + {\text{H}}_{2} {\text{O}}_{( l⁡ )} \rightarrow {\text{Sn}}_{( \text{aq} )}^{ 2 + } + {\text{HSO}}_{ 4 ( \text{aq} ) }^{-} + 3 {\text{H}}_{( \text{aq} )}^{+}$

Which of the following statements is correct ?

Official previous-year question

Held on 19 Apr 2014 · Verified 6 Jul 2026.

Options

A
Sn $^{4}$ $^{+}$ is the oxidizing agent because it undergoes oxidation
B
Sn $^{4}$ $^{+}$ is the reducing agent because it undergoes oxidation
C
H $_{2}$ SO $_{3}$ is the reducing agent because it undergoes reduction
D
H $_{2}$ SO $_{3}$ is the reducing agent because it undergoes oxidation

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Solution

Identify oxidation states of all elements in Redox Reaction

${\text{H}}_{2}{\overset{+4}{\text{SO}}}_{3}+\overset{4+}{\text{Sn}}+{\text{H}}_{2}\text{O}(l)\rightarrow \overset{2+}{\text{Sn}}+\text{H}\overset{+6}{{{{\text{SO}}_{4}}^{-}}_{}}+3{\text{H}}_{}^{+}$

S is changing the oxidation state from (+4) to (+6). i.e H $_{2}$ SO $_{3}$ is a Reducing agent because it undergoes oxidation.

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Solution

Identify oxidation states of all elements in Redox Reaction

${\text{H}}_{2}{\overset{+4}{\text{SO}}}_{3}+\overset{4+}{\text{Sn}}+{\text{H}}_{2}\text{O}(l)\rightarrow \overset{2+}{\text{Sn}}+\text{H}\overset{+6}{{{{\text{SO}}_{4}}^{-}}_{}}+3{\text{H}}_{}^{+}$

S is changing the oxidation state from (+4) to (+6). i.e H $_{2}$ SO $_{3}$ is a Reducing agent because it undergoes oxidation.

Options

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Solution

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Options

Did you get this right?

Solution

Your note

JEE Main Physical Chemistry in other years

More JEE Main Physical Chemistry questions

Other Chemistry topics for JEE Main

Organic Chemistry

Inorganic Chemistry

Keep practicing Physical Chemistry