Can someone do this for me? And show me step by step how to do it? I don\'t know
ID: 1017881 • Letter: C
Question
Can someone do this for me? And show me step by step how to do it? I don't know what I'm doing wrong 40) Use the tabulated half-cell potentials to calculate the equilibrium constant (K) for the following E (6.39)-(0.3)0.7 balanced redox reaction at 25°C Pb2+(aq) + Cu(s) Pb(s) + Cu2+(aq) A) 7.9 x 10-8 B) 8.9 x 107 C) 7.9 x 1015 D) 1.3 × 10-16 E) 1.1 × 10-8 Answer: D Diff: 4 Page Ref: 18.5 red (0.es) : log K .0593 Ref: 18.5 41) Calculate the cell potential for the following reaction that takes place in an electrochemical cell 25°C. Sn(s) Sn2+(aq, 1.8 M) Il Agt(aq, 0.055 M) 1 Ag(s) A)-0.94 V
Explanation / Answer
answer : option D) 1.3 x 10^-16
Pb+2 + Cu -------------> Pb + Cu+2
Eo = Eo reduction - Eo oxidation
= - 0.13 - (0.34 )
= - 0.47 V
delta Go = - n F Eo
= - 2 x 96485 x - 0.47
= 90.70 kJ/mol
delta Go = - R T ln K
90.70 = - 8.314 x 10^-3 x 298 x ln K
K = 1.3 x 10^-16