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View Attempt 2 of unlimited Title: Chapter 21(2) Started: December 6, 2009 11:58 PM Submitted: December 6, 2009 11:59 PM Time spent: 00:01:14 Total score: 3/12 = 25% Total score adjusted by 0.0 Maximum possible score: 12 1. Calc E then K 2 What is the value of the equilibrium constant at 25 o C for the reaction between the pair: Fe(s) and Cr 3+ (aq) to give Cr(s) and Fe 2+ (aq). Give your answer using E-notation with NO decimal places (e.g., 2 x 10 -2 would be 2E-2; and 2.12 x 10 -2 would also be 2E-2.). Do NOT include spaces, units, punctuation or anything else silly! Use the reduction potentials for Cr 3+ (aq) is -0.74 V and for Fe 2+ (aq) is -0.440 V. Student Response Value Correct Answer 1. not answered 0% Equals 4E-31 (100%) Score: 0/1 2. Calc E then G 4 What is the value of D G o in kJ at 25 o C for the reaction between the pair: Al(s) and Cd 2+ (aq) to give Cd(s) and Al 3+ (aq) Use the reduction potentials for Al 3+ (aq) is -1.66 V and for Cd 2+ (aq) is -0.40 V. Give your answer using E-notation with ONE decimal place
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This note was uploaded on 02/17/2010 for the course CHEM 1332 taught by Professor Shiv during the Fall '08 term at University of Houston.

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