Atomic weight of barium is 137.34 The equivalent weight of barium is `BaCrO_(4)` used an an oxidising agent in acid medium is

Options

A. 137.34
B. 45.78
C. 114.45
D. 68.67

Answer

B

Explanation

`CrO_(4)^(2-)` (and not `Ba^(2+)`) is involved as an oxidising agent and reduced to `Cr^(3+)` hence, `Ew=(Mw)/(3)`