Chemistry · Redox Reactions

JEE Main 2026 — 28 January, Morning Shift — Question 61

Consider the following redox reaction taking place in acidic medium BH4−(aq)+ClO3−(aq)→H2BO3−(aq)+Cl−(aq)\mathrm{BH}_{4}^{-}(\mathrm{aq})+\mathrm{ClO}_{3}^{-}(\mathrm{aq}) \rightarrow \mathrm{H}_{2} \mathrm{BO}_{3}^{-}(\mathrm{aq})+\mathrm{Cl}^{-}(\mathrm{aq}) If the Nernst equation for the above balanced reaction is Ecell =Ecell o−RTnFℓnQ\mathrm{E}_{\text {cell }}=\mathrm{E}_{\text {cell }}^{\mathrm{o}}-\frac{\mathrm{RT}}{\mathrm{nF}} \ell \mathrm{n} \mathrm{Q}, Then the value of n is ____\_\_\_\_ . (Nearest integer)

Answer: 24

Numerical answer — enter this value.

Step-by-step solution

3BH4−+4ClO3−⟶4Cl−+3H2BO3−+3H2O3 \mathrm{BH}_{4}^{-}+4 \mathrm{ClO}_{3}^{-} \longrightarrow 4 \mathrm{Cl}^{-}+3 \mathrm{H}_{2} \mathrm{BO}_{3}^{-}+3 \mathrm{H}_{2} \mathrm{O} n-factor =8=8 moles =3=3 ∴n=3×8=24\therefore \mathrm{n}=3 \times 8=24

Answer key and solution verified before publishing.

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Exam
JEE Main 2026
Subject
Chemistry
Chapter
Redox Reactions
Topic
Types of Redox Reactions & Balancing of Redox Reactions
Consider the following redox reaction taking place in acidic medium… | JEE Main 2026 PYQ with Solution · DhiX AI