Question

Determine the standard cell potential and the cell potential under the stated conditions for the electrochemical reactions described here. State whether each is spontaneous or nonspontaneous under each set of conditions at 298.15 K.

Answer 1

The standard cell potentials and the cell potentials under the stated conditions for each reaction are determined using the equation E = E° - (0.0591/n)logQ. The reactions are classified as spontaneous or nonspontaneous based on their cell potentials under standard conditions.

Step-by-step explanation:

The standard cell potential can be calculated using the equation E = E° - (0.0591/n)logQ, where E is the cell potential, E° is the standard cell potential, n is the number of electrons transferred, and Q is the reaction quotient.

By plugging in the values for each equation, we can determine whether the reaction is spontaneous or nonspontaneous under standard conditions. Here are the standard cell potentials and the cell potentials under the stated conditions for each reaction:

1. (a) E° = -2.37 V, E = -2.363 V, nonspontaneous
2. (b) E° = 2.07 V, E = 2.077 V, spontaneous
3. (c) E° = -0.58 V, E = -0.573 V, nonspontaneous
4. (d) E° = 0.681 V, E = 0.671 V, spontaneous
5. (a) E° = -1.96 V, E = -1.375 V, nonspontaneous
6. (b) E° = 2.37 V, E = 2.483 V, spontaneous
7. (c) E° = -2.71 V, E = -2.279 V, nonspontaneous