Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 201419 AprilOnline
Exam
JEE Main
Year
2014
Date
19 April
Mode
Online
Subject
Chemistry
Chapter
Redox Reactions

JEE Main 2014 · 19 April · Online · Chemistry · Redox Reactions

Consider the reaction : H _ 2 SO _ 3 (aq) + Sn _ (aq) ^ 4 + + H _ 2...

Consider the reaction :

H2SO3(aq)+Sn(aq)4++H2O(l)→Sn(aq)2++HSO4(aq)−+3H(aq)+{\text{H}}_{2} {\text{SO}}_{3 \left(\text{aq}\right)} + {\text{Sn}}_{\left(\text{aq}\right)}^{4 +} + {\text{H}}_{2} {\text{O}}_{\left(l \right)} \to {\text{Sn}}_{\left(\text{aq}\right)}^{2 +} + {\text{HSO}}_{4 \left(\text{aq}\right)}^{-} + 3 {\text{H}}_{\left(\text{aq}\right)}^{+}

Which of the following statements is correct ?

Options

  1. ASn4+ is the oxidizing agent because it undergoes oxidation
  2. BSn4+ is the reducing agent because it undergoes oxidation
  3. CH2SO3 is the reducing agent because it undergoes reduction
  4. DH2SO3 is the reducing agent because it undergoes oxidation

Correct answer

D. H2SO3 is the reducing agent because it undergoes oxidation

Step-by-step solution

Identify oxidation states of all elements in Redox Reaction

H2SO+43+Sn4++H2O(l)→Sn2++HSO4−+6+3H+{\text{H}}_{2}\overset{+ 4}{\text{SO}}3 + \overset{4 +}{\text{Sn}} + {\text{H}}_{2}\text{O} (l) \to \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 H2SO3 is a Reducing agent because it undergoes oxidation.
Practice Redox Reactions on Quantrex Academy →

More from Redox Reactions

500 mL of 0.2 M MnO _4^- solution in basic medium when mixed with 500 mL of 1.5 M KI… JEE Main 2026Given below are two statements: Statement I: Sodium dichromate and potassium dichromate… JEE Main 2026In order to oxidise a mixture of 1 mole each of FeC_2O_4 , Fe_2(C_2O_4)_3 , FeSO_4 and… JEE Main 2026500 mL of 1.2 M KI solution is mixed with 500 mL of 0.2 M KMnO_ 4 solution in basic… JEE Main 2026One mole of Cl_ 2 (~g) was passed into 2 L of cold 2 M KOH solution. After the reaction… JEE Main 2026X and Y are the number of electrons involved, respectively during the oxidation of I^… JEE Main 2026200 cc of x × 10^ -3 M potassium dichromate is required to oxidise 750 cc of 0.6 M Mohr's… JEE Main 2026Identify the correct statements : A. Hydrated salts can be used as primary standard. B.… JEE Main 2026 Full Redox Reactions list All JEE Main PYQs