The chemical reaction , `2 Ag Cl (s) rarr 2HCl(aq) + 2Ag(s)` taking place in a galvanic cell is represented by the notation .

Options

A. `Pt |H_2(g), 1 "bar" |1 M KCl(aq) |AgCl (s) |Ag(s)`
B. `Pt(s) |H_2(g), 1 "bar" |1 "bar" |a M HCl(aq) || 1 Mag^+ (aq) Ag(s)`
C. `Pt (s) +H_2(g).1 |"bar" |MHCl (aq) |AgCl(s) |Ag(s)`
D. `Pt (s) +H_2(g).1 |"bar" |MHCl (aq) |AgCl(s) |Ag(s)`

Answer

C

Explanation

` 2 AgCl(s) + H_2(g) rarr HCl (aq) + 2 Ag (s)`
The activites of solids and liquids are taken as unity and at low concentratios, 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 | Ag Cl (aq) 1M | Ag(s)`.