13. The Electromotive Force (emf) ofthe cell Pt,H2(lbar)|HCI(0.01m) AgCl(s)|Ag is 0.2002V at 25°C, is –8.665×10-5V/K. [Hint: The electrode reactions of cell are ；The cell reaction is + AgCl(s) → Ag + H+ +Cl-; e =1.602x10-19C] The Gibbs energy change of the cell reaction is △ G = (A) -1.932 J/mol ,(B) -19.32 J / тol ,(C) -193.2 J/mol,(D) -1,932 J/mol ,(E) -19,320 J/ mol