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The Standard Cell Potential for the Reaction

Question 15

Multiple Choice

The standard cell potential for the reaction
6 [Fe(CN) 6]3- (aq) + 2 Cr3+ (aq) + 7 H2O (aq) → Cr2O72- (aq) + 14 H+ + 6 [Fe(CN) 6]4- (aq)
Has a value of -0.97 V at 298 K. Predict whether the reaction, as written, will be spontaneous in the forward direction at this temperature.


A) The reaction is spontaneous in the forward direction
B) The reaction is at equilibrium
C) The reaction is spontaneous in the backward direction
D) It is not possible to determine from the standard cell potential alone, whether the reaction will be spontaneous

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