When $E^o_{Ag^{+}/Ag} = 0.8 \ V$ and $E^o_{Zn^{2+}/Zn} = -0.76 \ V$,which of the following is correct?
- A$Ag^{+}$ can be reduced by $H_2$
- B$Ag$ can oxidise $H_2$ into $H^{+}$
- C$Zn^{2+}$ can be reduced by $H_2$
- D$Ag$ can reduce $Zn^{2+}$ ion
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