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In the cell Pt|(s)|H 2 (g, 1 bar)|HCl(aq)|AgCl|(s)|Ag(s)|Pt(s) the cell potential is 0.92 V when a 10 –6 molal HCl solution is used. The standard electrode potential of (AgCl/ Ag,Cl – ) electrode is : ⎭ ⎬ ⎫ ⎩ ⎨ ⎧ = K 298 at V 06 . 0 F RT 303 . 2 , Given

1. 0.94 V
2. 0.40V
3. 0.76 V
4. 0.20 V

Correct answer: 0.20 V

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