12H2(g)+AgCl(s)⇌H⊕(aq)+Cl⊖(aq)+Ag(s) occurs in a galvanic cell.
The structure of the cell will be:
A
Ag,AgCl(s)|KCl(sol)|AgNO3(sol),Ag
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B
Pt,H2(g)|HCl(sol)|AgNO3(sol),Ag
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C
Pt,H2(g)|HCl(sol)|AgCl(s),Ag
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D
Pt,H2(g)|KCl(sol)|AgCl(s),Ag
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Solution
The correct option is CPt,H2(g)|HCl(sol)|AgCl(s),Ag The cell notation is Pt,H2(g)|HCl(sol)|AgCl(s),Ag
The cell reaction is 12H2(g)+AgCl(s)⇌H⊕(aq)+Cl⊖(aq)+Ag(s)
Hydrogen is oxidized, hence, in the cell notation, it is written on left hand side. Silver is reduced, hence, in the cell notation, it is written on right-hand side. Silver electrode is in contact with AgCl and hydrogen gas is in contact with HCl solution. Option C is correct.