By how much is the oxidizing power of `Cr_2O_7^(2-)"|"Cr^(3+)` couple decreased if the `H^+` concentration is decreased from 1M to `10^(-30`M at `25^(@)` C?
A
0.001 V
B
0.207 V
C
0.441 V
D
0.414 V
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The correct Answer is:
D
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