The standard reduction potential of Cd2+(aq) is –0.402 V. A voltaic cell described by Cd(s) + 2 H+(a — Electrochemistry Chemistry Question
Question
The standard reduction potential of Cd2+(aq) is –0.402 V. A voltaic cell described by
Cd(s) + 2 H+(aq) Cd2+(aq) + H2(aq)
has [Cd2+] = 0.900 M and a hydrogen pressure of 0.975 atm. Its cell potential at 25 ºC is measured as E = +0.192 V. What is the pH in the H+ | H2 half-cell?
A.
3.28
B.✓ Correct
3.58
C.
6.54
D.
7.15
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