The EMF of a cell corresponding to the reaction : Z n ( s ) + 2 H + ( a q ) → Z n 2 + ( 0.1 M ) + H 2 ( g ) ( 1 a t m . ) i s 0.28 v o l t a t 25 ° C . The pH of the solution at the hydrogen electrode. E Z n 2 + / Z n o = − 0.76 v o l t ; E H + / H 2 o = 0

Step-by-step solution

The cell may be represented as Zn ( s ) | Zp 2 ( aq ) | | H ( aq ) | H 2 ( g ) 1 atm Pt ( s )               Zn ( s )                         →           Zn 2 + ( a q ) + 2 e ¯   ( Anode ) 2 H + ( a q ) + 2 e ¯     →             H 2 ( g )     1 a t