Question

In the balanced chemical reaction,

IO_{3}^{–} + aI^{–} + bH^{+} \rightarrow cH_{2}O + dI_{2}.

a, b, c and d respectively correspond to –

• A. 5, 6, 3, 3
• B. 5, 3, 6, 3
• C. 3, 5, 3, 6
• D. 5, 6, 5, 5

Answer 1

Answer: (A)

5, 6, 3, 3

Answer 2

IO₃^– + aI^– + 6H⁺ พฎ cH₂O + dI₂

step-1, I^– ฎ I₂ (Oxidⁿ), IO₃^– ฎ I₂ (Redⁿ)

step-II 2IO₃^– + 12H⁺ ฎ I₂ + 6H₂O

step-III, 2IO₃^– + 12H⁺ + 10e^– ฎ I₂ + 6H₂O

2I^– ฎ I₂ + 2e^–

step-IV, 2IO₃^– + 12H⁺ + 10e^– ฎ I₂ + 6H₂O

[2I^– ฎ I₂ + 2e^–] ื 5

step-V, 2IO₃^– + 10 I^– + 12H⁺ ฎ 6I₂ + 6H₂O

IO₃^– + 5I^– + 6H⁺ ฎ 3I₂ + 3H₂O

On comparing a = 5, b = 6, c = 3, d =