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27. Use the standard reduction potenital to calculate equilibrium constants for the following reaction. CdS(s) → Cd2+ (aq) +3

E° = -0.4030 V E° = -1.17 V Cd2+ (aq) +2e → Cd (s) CdS(s) +2e → Ca (s) +S2- (aq) A. K=1.7 x10° nonspontaneous B. K=3.1 x102 n

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L -111-(-0.4630) -0.767 Now no. of dectron bransfer 2 RT lnk= nFE° faraday constant - Rogas constant to mul 8-314] x 377k lnk

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