Question

In acidic medium, equivalent weight of K₂Cr₂O₇ (Mol. wt. = M) is

(a) M/3

(b) M/4

(c) M/6

(d) M/2

Answer 1

Correct option is (c) M/6

\(Cr_2O_7^{2-} + 8H^+ + 5e^- \longrightarrow 2Cr^{3+} + 7H_2O\)