The amount of current in Faraday is required for the reduction of 1 mol of `Cr_2 O_7^(2-) ` ions to `Cr^(3+)` is ,

Options

A. 1F
B. 2F
C. 6F
D. 4F

Answer

C

Explanation

`Cr_2 O_7^(2-) + 14H^+ + 6e^- to 2Cr^(3+) + 7H_2 O`