Write a balanced chemical equation for the following reaction in a basic solutio

Question

Write a balanced chemical equation for the following reaction in a basic solution. ClO-(aq) + Cr(OH)_3(s) right arrow Cl-(aq) + CrO^2-_4(aq) 3ClO-(aq) + 2Cr(OH)_3(s) + 4OH-(aq) right arrow Cl-(aq) + CrO^2-_4(aq) + 5H_2O(l) ClO-(aq) + Cr(OH)_3(s) + 3OH-(aq) right arrow Cl-(aq) + CrO^2-_4(aq) + 3H_2O(l) 2ClO-(aq) + 3Cr(OH)_3(s) + 3OH-(aq) right arrow 2Cl-(aq) + 3CrO^2-_4(aq) + 6H_2O(l) 4ClO-(aq) + Cr(OH)_3(s) + 4OH-(aq) right arrow Cl-(aq) + CrO^2-_4(aq) + 6H_2O(l) ClO-(aq) + Cr(OH)_3(s) right arrow Cl-(aq) + CrO^2-_4(aq) + 3 H+(aq)

Explanation / Answer

answer : option a) 2 Cr(OH)3 + 3 ClO-1 + 4 OH- ------------------> 2 CrO4-2 + 3 Cl- + 5 H2O (l)

Explanation :

reducton half reaction :

ClO- --------------------> Cl-

+1                                  -1

oxidation half reaction :

Cr(OH)3 --------------> CrO42-

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