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Zn(s) / Zn2+(aq) // H+(aq) / H2(g) E˚ = 0.76 V What must be the pH in the hydrogen compartment of thElectrochemistry Chemistry Question

Question

Zn(s) / Zn2+(aq) // H+(aq) / H2(g) E˚ = 0.76 V
What must be the pH in the hydrogen compartment of the cell designated above if the cell voltage is 0.70 V? (Assume that both the [Zn2+] and the H2(g) pressure are at standard values and T = 25 ˚C.)

A.

0.51

B.

1.01

✓ Correct
C.

2.50

D.

3.21

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