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MCAT Question of the Day
Q:
The potential of a galvanic cell is measured at 0.36 V. If one of the half cell reactions is Cd
2+
+ 2e
-
→ Cd (-0.40 V) which occurs as the reduction reaction. Which of the following could be the other half cell reaction?
A
ClO
3
-
+ H
2
O + 2e
-
→ ClO
2
-
+ 2OH
-
(0.36 V)
B
Fe
3+
+ e
-
→ Fe
2+
(0.76 V)
C
Fe
2+
+ 2e
-
→ Fe (-0.36 V)
D
Zn
2+
+ 2e
-
→ Zn (-0.76 V)
Electrochemistry
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