Question

When a equimolar mixture of `Cu_(2)`S and CuS is tirated with `Ba(MnO_(4))_(2)` in acidic medium, the final products cintain `Cu^(2+)`, `So_(2)` and `Mn^(2+)`. If the mol. Mass of `Cu_(2)`S, and `Ba(MnO_(4))_(2)`are `M_(1)`, `M_(2)` and `M_(3)` respectively then :
A. Equivalent weight of `Cu_(2)S` is `(1)/(8)`
B. Equivalent weight of `CuS` is `M_(2)//5`
C. Equivalent weight of `AI(MnO_(4))_(3)` is `M_(3)//5`
D. Equivalent weight of `AI(MnO_(4))_(3)` is `M_(3)//15`

Answer 1

Correct Answer - A::D
n-factor for `Cu_(2)S rarr 8`
n-factor for `CuS rarr 6`
n-factor for `Al (MnO_(4))_(3) rarr 15`