0.10 M MnO4– 0.40 M Cr3+ 0.20 M Mn2+ 0.30 M Cr2O72– 0.010 M H+ 0.010 M H+ The standard reduction potentials are as follows: MnO4– + 8H+ + 5e– → Mn2+ + 4H2O, ε° = 1.51 V Cr2O72– + 14H+ + 6e– → 2Cr3+ + 7H2O, ε° = 1.33 V What is the value of Q, the reaction quotient, for this cell reaction?
6.7 × 10^40
1.5 × 10^–41
6.7 × 10^3
1.5 × 10^–4
None of these choices are correct.
Answers: 2
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0.10 M MnO4– 0.40 M Cr3+ 0.20 M Mn2+ 0.30 M Cr2O72– 0.010 M H+ 0.010 M H+ The standard reduction pot...
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