The potential of hydrogen electrode in contact with a solution with pH =10, is -


1. −0.0591 V
2. −5.91 V
2. 0.0591 V
4. −0.591 V
Subtopic:  Relation between Emf, G, Kc & pH |
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The cell in which the following reactions occurs:

2Fe3+(aq)+2I-(aq)→2Fe2+(aq)+I2(s) has \(E_{cell}^{o}\)= 0.236 V at 298 K.

The standard Gibbs energy of the cell reaction is -

1.   41.14 kJ mol−1
2.   45.54 kJ mol−1
3. −49.94 kJ mol−1
4. −45.54 kJ mol−1

 

Subtopic:  Relation between Emf, G, Kc & pH |
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The cell in which the following reactions occurs:

2Fe3+(aq)+2I-(aq)→2Fe2+(aq)+I2(s) has \(E_{cell}^{o}\)= 0.236 V at 298 K.

The standard Gibbs energy of the cell reaction is −45.54 kJ mol−1 . The value of equilibrium constant  of the cell reaction is

1. 10.27 × 109
2. 9.57 × 107
3. 12.17 × 108
4. 7.17 × 106

Subtopic:  Relation between Emf, G, Kc & pH |
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