The equation representing the process by which standard reductin potential of zinic can be defined is

Options

A. `Zn^(2+)(s)+2e^(-)rarrZn`
B. `Zn(g)rarrZn^(2+)(g)+2e^(-)`
C. `Zn^(2+)(g)+2e^(-)rarrZn`
D. `Zn^(2+)(aq)+2e^(-)rarrZn(s)`

Answer

C

Explanation

Standart reduction potential for zinc is the potential required to reduce 1 M aquesous solutoin of `Zn^(2+)` ion hence the reaction is best represetnted as
`Zn^(2+) (aq)+2e^(-) rarr (Zn(s)`