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COMEDK2013ChemistryElectrochemistry

A galvanic cell is constructed using the redox reaction, 1 2 H ₂(g)+ AgCl (s) H ⁺(a q)+ Cl ⁻(a q)+ Ag (s) it is represented as

Options

  1. APt | H ₂(g) | HCl ( sol )|| AgNO ₃( sol ) Ag
  2. BAg | AgCl (s)| KCl ( sol )|| HCl ( sol ), H ₂( ~g ) Pt
  3. CPt | H ₂(g) | KCl ( sol ) | AgCl (s) Ag
  4. DPt | H ₂(g), HCl ( sol ) || AgCl (s)| Ag

Correct answer

D. Pt | H ₂(g), HCl ( sol ) || AgCl (s)| Ag

Step-by-step solution

At anode, oxidation occurs of H ₂ (gas), while at cathode reduction of AgCl take place. The cell notation is Pt | H ₂( ~g ), HCl ( sol ) | AgCl (s) | Ag

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