.
In the reaction:
`As_2 S_3 +HNO_3 to H_3 A O_4 +H_2 SO_4 + NO` the element oxidised is :As only S only N only As and s both

Options

A. As only
B. S only
C. N only
D. As and s both

Answer

D

Explanation

`(A s^(3+))_2 to A s ^(5+) + 4e, (S^(2-))_3 to 3s^(6+) + 24 e `