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Answer to Question #77578 in Physical Chemistry for Brad
Question #77578
A cell with the potential of 0.74 V has the cell reaction
2Cr + 6H+ ⇌ 2Cr3+ + 3H2
If the concentrations of the ions were 1.0 molar and the pressure of H2 were 1.0 atmosphere, then the Eo for the half-reaction
Cr3+ + 3e- ⇌ Cr
would be
-0.74 V
-0.37 V
0.25 V
0.37 V
0.74 V.
2Cr + 6H+ ⇌ 2Cr3+ + 3H2
If the concentrations of the ions were 1.0 molar and the pressure of H2 were 1.0 atmosphere, then the Eo for the half-reaction
Cr3+ + 3e- ⇌ Cr
would be
-0.74 V
-0.37 V
0.25 V
0.37 V
0.74 V.
Expert's answer
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