Gibbs Free Energy

For a spontaneous reaction, the sign on must be negative.
Gibbs free energy relates enthalpy, entropy and temperature.
A spontaneous reaction will always occur when is negative and is positive.

Step 1: Understand the relationship between Gibbs free energy and spontaneity.
The spontaneity of a reaction is determined by the Gibbs free energy change .
A reaction is spontaneous if , which means the process will occur without external input.
Step 2: Identify the correct option.
A negative value of indicates that the reaction is spontaneous.