NEETChemistryElectrochemistry
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): When a balanced equation for a galvanic cell reaction is multiplied by 2, the standard cell potential ( E^ _ cell ) is also doubled. Reason (R): Standard cell potential is an intensive property, whereas standard Gibbs energy change ( _r G^ ) is an extensive property. In the light of the above state
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A)
- BBoth (A) and (R) are true but (R) is not the correct explanation of (A)
- C(A) is true but (R) is false
- D(A) is false but (R) is true
Correct answer
D. (A) is false but (R) is true
Step-by-step solution
Assertion (A) is false. When a balanced cell reaction is multiplied by an integer, the standard cell potential ( E^ _ cell ) remains the same. It does not get multiplied because it is an intensive property (representing energy per unit charge). Reason (R) is true. Standard cell potential ( E^ _ cell ) is an intensive thermodynamic property, meaning it is independent of the amount of substance reacting. In contrast, standard Gibbs energy change ( _r G^ ) is an extensive property, which means its value depends on the