Question

Exercise 18.65

Use tabulated half-cell potentials to calculate ΔG∘rxn for each of the following reactions at 25 ∘C.

Part A

Pb2+(aq)+Mg(s)→Pb(s)+Mg2+(aq)

ΔG∘rxn =

kJ

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Part B

Br2(l)+2Cl−(aq)→2Br−(aq)+Cl2(g)

Express your answer using two significant figures.

ΔG∘rxn =

kJ

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Part C

MnO2(s)+4H+(aq)+Cu(s)→Mn2+(aq)+2H2O(l)+Cu2+(aq)

Express your answer using two significant figures.

ΔG∘rxn =

kJ