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ElectrochemistryMCQ

Given the standard reduction potentials: O2 + 4H+ + 4e– → 2H2O E˚ = 1.23 V Br2 + 2e– → 2Br – E˚ = 1.Electrochemistry Chemistry Question

Question

Given the standard reduction potentials:
O2 + 4H+ + 4e– → 2H2O E˚ = 1.23 V
Br2 + 2e– → 2Br – E˚ = 1.08 V
2H+ + 2e– → H2 E˚ = 0.00 V
Na+ + e– → Na E˚ = –2.71 V
What products are formed in the electrolysis of 1 M NaBr in a solution with [H3O+] = 1 M?

A.

Na(s) and O2(g)

B.

Na(s) and Br2(g)

C.

H2(g) and Br2(g)

✓ Correct
D.

H2(g) and O2(g)

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