The chemical reaction
`2AgCl_("(fused)")+H_(2(g))rarr2HCl_((aq))+2Ag_((s))`
taking place in a galvanic cell is represented by the notation

Options

A. `Pt|H_(2(g)), 1" bar" |1M KCl_((aq))|AgCl_((s))|Ag_((s))`
B. `Pt_((s))|H_(2(g)), " 1 bar"|1M HCl_((aq))||1M Ag_((aq))^(+)|Ag_((s))`
C. `Pt_((s))|H_(2(g)), " 1 bar"|1M HCl_((aq))|| 1M Ag_((aq))^(+)|Ag_((s))`
D. `Pt_((s))|H_(2(g)), "1 bar" |1M HCl_((aq))|AgCl_((s))|Ag_((s))`

Answer

B

Explanation

`2AgCl_((s))+ H_(2(g)) rarr 2HCl_((aq))+ 2Ag_((s))`
The activities of solids and liquids are takes as unity and at low concentrations, the activity of a solute is approximated to its molarity. The cell reaction will be
`Pt_((s))|H_(2(g))" 1 bar"|H_((aq))^(+)1M| AgCl_((aq))1M|Ag_((s))`