Question

Identify the FALSE statement from the following.

• A. Standard cell potential of galvanic cell is an extensive property.
• B. Standard electrode potential is an intensive property.
• C. For spontaneous cell reaction in galvanic cell, free energy change should be negative.
• D. For spontaneous cell reaction in galvanic cell equilibrium constant of reaction should be greater than 1.

Hint:

Electrode and cell potentials are intensive properties, while free energy change is extensive.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept
An intensive property does not depend on the amount of substance, while an extensive property does.
Potentials are measured per unit charge, so they do not depend on the size of the cell.

Step 2: Check each statement
Standard electrode potential is intensive, so that statement is true.
Spontaneity needs \(\Delta G<0\) and \(K>1\), so both of those statements are true.

Step 3: Find the false statement
The standard cell potential \(E^{\circ}_{\text{cell}}\) is also intensive, so calling it extensive is false.

Final Answer:
The false statement is that the standard cell potential is an extensive property. \[ \boxed{\text{(A) }\text{Standard cell potential of galvanic cell is an extensive property.}} \]