The incorrect statements from the following is:

A. The electrical work that a reaction can perform at constant pressure and temperature is equal to the reaction Gibbs energy.
B. is dependent on the

Question

The incorrect statements from the following is:

A. The electrical work that a reaction can perform at constant pressure and temperature is equal to the reaction Gibbs energy.
B.  is dependent on the pressure.
C. 
D. A cell is operating reversibly if the cell potential is exactly balanced by an opposing source of potential difference.

Canvas Classes · Accepted Answer

Strategy:
 Evaluate standard electrochemical and thermodynamic definitions.  is defined for standard state conditions () and is inherently independent of pressure for a given temperature.

Step 1: Evaluate B
 is the standard EMF. By definition, standard state specifies a fixed pressure (). Changing the external pressure does not change the "standard" value itself. Thus, saying it is dependent on pressure is incorrect.

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