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In the button cell widely used for watch...

In the button cell widely used for watches and other devices, the following reaction takes place:
`Zn(s)+Ag_2O(s)+H_2O(l)rarrZn^(2+)(aq)+2Ag(s)+2OH^(-)(aq)`
Determine the value of `K_c` for the above reaction using the following data?
`AgO_2(s)+H_2O(l)+2barerarr2Ag(s)+2Oh^(-)(aq)`
(`E^@=0.344V`)
`Zn^(2+)(aq)+2barerarrZn(s)`
(`E^@=-0.76V`)

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