Calculate the emf of the following cells, find their cells reactions using `E^@` values from the table?
`Zn|ZnO_2^(2-) (0.1M), OH^(-) (1M) |HgO|Hg`
In each case, is the reaction as written spontaneous or not?

Explanation

`HgO+Zn+2OH^(-) (1.0)=Hg+ZnO_2^(2-) (0.1)+H_2O, 1.343` volts