Question

Which of the following acts as reducing as well as oxidising agent ?
A. `NaNO_(3)`
B. `Na_(2)O`
C. `Na_(2)O_(2)`
D. `KNO_(3)`

Answer 1

Correct Answer - C
`O_(2)^(-)` (peroxide ion) can be oxidised to `O_(2)` and can be reduced to oxide ion , `O_(2)^(-)` . Thus , `Na_(2)O_(2)` acts both a reducing as well as an oxidising agent .