Question

For a cell reaction to be spontaneous, the standard free energy change of the reaction must be:

• A. Zero
• B. Positive
• C. Infinite
• D. Negative

Hint:

A negative value for \( \Delta G \) indicates a spontaneous reaction, while a positive value indicates non-spontaneity.

Answer 1

The Correct Option is D

Step 1: Free energy change and spontaneity. A negative standard free energy change (\( \Delta G \)) indicates that the reaction is spontaneous.
Step 2: Conclusion. Thus, for a reaction to be spontaneous, \( \Delta G \) must be negative.