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Based on the reactions and data below, which reaction is least spontaneous? — Electrochemistry Chemistry Question

Question

Based on the reactions and data below, which reaction is least spontaneous?

A.

2 Hg2+ + 2 I–  Hg2 2+ + I2

B.

H2 + 2 OH– + I2  2 H2O + 2 I–

C.

2 H2O + Hg2 2+  H2 + 2 OH– + 2 Hg2+

✓ Correct
D.

H2 + 2 OH– + 2 Hg2+  2 H2O + Hg2 2+

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