If the entropy of a system increases, what is the effect on Gibbs Free Energy at constant temperature?
Practice Questions
1 question
Q1
If the entropy of a system increases, what is the effect on Gibbs Free Energy at constant temperature?
ΔG increases
ΔG decreases
ΔG remains constant
ΔG becomes zero
If entropy increases, ΔG decreases, making the reaction more favorable.
Questions & Step-by-step Solutions
1 item
Q
Q: If the entropy of a system increases, what is the effect on Gibbs Free Energy at constant temperature?
Solution: If entropy increases, ΔG decreases, making the reaction more favorable.
Steps: 6
Step 1: Understand what entropy is. Entropy is a measure of disorder or randomness in a system.
Step 2: Know that Gibbs Free Energy (ΔG) is a measure of the energy available to do work in a system at constant temperature and pressure.
Step 3: Remember the Gibbs Free Energy equation: ΔG = ΔH - TΔS, where ΔH is the change in enthalpy, T is the temperature, and ΔS is the change in entropy.
Step 4: If the entropy (ΔS) of the system increases, the term TΔS (temperature times change in entropy) also increases.
Step 5: Since ΔG = ΔH - TΔS, an increase in TΔS means that ΔG will decrease if ΔH remains constant.
Step 6: A decrease in ΔG indicates that the reaction is more favorable or spontaneous.
