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1. Use the following standard cell potentials to answer the questions below. Yb3+(aq) + 3e− ⇌...

1. Use the following standard cell potentials to answer the questions below.

Yb3+(aq) + 3e− ⇌ Yb(s) E° = -2.190 V
Au3+(aq) + 2e− ⇌ Au+(aq) E° = 1.401 V

(a) What is ΔG° (in kJ/mol) for this reaction? Report answer to three significant figures in scientific notation (i.e., 1.23e2 kJ/mol)

(b) ) This reaction is （spontaneous or not spontaneous）.

2. Determine Ecell (in V) at 298.15 K for a cell composed of a platinum electrode in a mixture of 0.827 M V2+and 0.543 M V3+ coupled to a platinum electrode in a solution where the [H+] is 1.506 M and the partial pressure of H2 is 1.493 atm. Report your answer to three decimal places in standard notation (i.e. 1.234 V).

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