The equivalent weight of potassium permanganate in acid solution is

Options

A. 1/5 of its molecular weight
B. 1 /6 of its molecular weight
C. 1/10 of its molecular weigh
D. 1/2 of its molecular weight

Answer

A

Explanation

In acidic medium, `MnO_4^(-) + 8H^(+) + 5e^(-) to Mn^(2+) + 4H_2O`
`therefore` Equivalent weight of `KMnO_4 = M/5=158/5`=31.6