sreyamiryala

What is the total number of moles (n) of electrons exchangedbetween the oxidizing agent and the reducing agent in the overallredox equation: Cr2O72-(aq) + 6Fe2+(aq) + 14H+(aq) ? 2Cr3+(aq) +6Fe3+(aq) + 7H2O(l)?

1, 2, 6, 3, 12

________ is the oxidizing agent in the reaction below.

Cr₂O₇^2- + 6S₂O₃^2- + 14H⁺ → 2Cr³⁺ + 3S₄O₆^2- + 7H₂O

1. ________ is the oxidizing agent in the reaction below.

Cr₂O₇^2- + 6S₂O₃^2- + 14H⁺ ? 2Cr³⁺ + 3S₄O₆^2- + 7H₂O

Electrochemistry questions

What is reduced in the follwing reaction?

Cr₂O₇^2-(aq) + 6S₂O₃^2-(aq) + 14H⁺(aq)---- 2Cr³⁺(aq) +3S₄O₆^2-(aq) + 7H₂O(l)

a) H+,

b)S4O6^2-

c) S2O3^2-

d)Cr2O7^2-

e) Cr³⁺

• is reduced in the following reaction:

1. Cr2O72- + 6S2O32- + 14H+ ¬ 2Cr3+ + 3S4O62- + 7H2O