Q.

For the reaction  Pt /H2(1atm) / H+(aq) // Cl–(aq) /AgCl/Ag  Kc (equilibrium constant) is represented as

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a

Kc=[Cl-][AgCl][H+]H2

b

Kc=H+Cl-

c

Kc=H+H2Cl-[AgCl]

d

Kc=H2[Ag]

answer is B.

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Detailed Solution

From the given cell notation the cell reaction is Anode : 12H2(1atm)⇌H(aq)++e- Cathode: AgCl(s)+e-⇌Ag(s)+Cl(aq)-AgCl(s)+12H2(1atm)⇌H(aq)++Cl(aq)-+Ag(s) KC=H+Cl-For  all Solids and pure liquids, active mass = 1
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