Question

In the redox reaction `AgNO_3 + Na -> NaNO_3 + Ag`, which element has been reduced?

Answer 1

`Ag^+ rarr Ag^0darr`

Explanation:

Silver ion undergoes a change in oxidation state from `+I` to `0`. Since silver has undergo a DOWNWARD change in oxidation state, it has been formally reduced.

On the other hand, elemental sodium has gone from `Na^0` to `Na^+`; that is, it has been OXIDIZED.