Question

Match the thermodynamic quantities with the physical meaning.

G < 0
S > 0
H < 0
The reaction is sprontaneous. The system becomes more diorderly. The reaction is exothermic.
The reaction is sprontaneous. The system becomes more diorderly. The reaction is exothermic.
The reaction is sprontaneous. The system becomes more diorderly. The reaction is exothermic.

Answer 1

Gibbs free energy (G < 0) corresponds to a spontaneous reaction, entropy (S > 0) to an increase in disorder, and negative enthalpy (H < 0) indicates an exothermic reaction.

Step-by-step explanation:

Matching thermodynamic quantities with their physical meanings involves three key concepts: Gibbs free energy (G), entropy (S), and enthalpy (H). Here is the correct matching:

• G < 0: The reaction is spontaneous.
• S > 0: The system becomes more disorderly.
• H < 0: The reaction is exothermic.

A negative Gibbs free energy (G < 0) indicates that a process or chemical reaction occurs spontaneously under constant pressure and temperature. An increase in entropy (S > 0) implies a transition to a more disordered state. Negative enthalpy (H < 0) signifies that the reaction releases heat to its surroundings, making it exothermic.

Understanding these thermodynamic quantities is essential for predicting the spontaneity and energetics of chemical reactions.