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JEE Main 202429 JanuaryMorning Shift
Exam
JEE Main
Year
2024
Date
29 January
Shift
Morning Shift
Subject
Chemistry
Chapter
Redox Reactions

JEE Main 2024 · 29 January · Morning Shift · Chemistry · Redox Reactions

Chlorine undergoes disproportionation in alkaline medium as shown...

Chlorine undergoes disproportionation in alkaline medium as shown below :
aCl2(g)+bOH−(aq)→cClO−(aq)+dCl−(aq)+eH2O(l){aCl}_{2} ( g ) + {bOH}^{-} ( aq ) \to {cClO}^{-} ( aq ) + {dCl}^{-} ( aq ) + {eH}_{2}O ( l )

The values of a,b,ca, b, c and dd in a balanced redox reaction are respectively :

Chlorine undergoes disproportionation in alkaline medium as shown below : aCl _ 2 ( g ) + bOH ^ - ( aq ) → cClO ^ - (

Options

  1. A1,2,1and11, 2, 1\text{and}1
  2. B2,2,1and32, 2, 1\text{and}3
  3. C3,4,4and23, 4, 4\text{and}2
  4. D2,4,1and32, 4, 1\text{and}3

Correct answer

A. 1,2,1and11, 2, 1\text{and}1

Step-by-step solution

Chlorine undergoes disproportionation reaction in alkaline medium. It is the simultaneous oxidation-reduction. Chlorine is simultaneously reduced to chloride ion Cl−{Cl}^{-} and is oxidised to  ClO−{ClO}^{-}  ion. Halogens (e.g. Cl) have a strong tendency to accept electrons, so they act as strong oxidising agents.

Chlorine undergoes disproportionation in alkaline medium as shown below : aCl _ 2 ( g ) + bOH ^ - ( aq ) → cClO ^ - (

The reaction is as follows,

(\Rightarrow \mathrm{Cl}_2 - 2 \mathrm{O} \mathrm{H}^- \longrightarrow \mathrm{Cl}^{-}+\mathrm{ClO}^{-}+\mathrm{H}_2 \mathrm{O})

Hence the values of a,b,c,d are 1,2,1,1.1, 2, 1, 1 .

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