67. Solving a chemistry problem
1. What will be the value of the redox potential in a solution containing a pair of Cr2O72- / 2Cr3, provided that C (Cr2O72-) \u003d 0.22 mol / l, C (Cr3) \u003d 0.32 mol / l and C (HNO3) \u003d 0.5 mol/l?
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