Multiple Choice
Which of the following reactions would be endergonic?
7. Energy and Metabolism
Chemical Reactions
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
From the equation ΔG = ΔH – TΔS it is clear that __________.
A
a decrease in the system's total energy will increase the probability of spontaneous change
B
increasing the entropy of a system will increase the probability of spontaneous change
C
increasing the temperature of a system will increase the probability of spontaneous change
D
a decrease in the system's total energy will increase the probability of spontaneous change, and increasing the entropy of a system will increase the probability of spontaneous change
E
a decrease in the system's total energy will increase the probability of spontaneous change, increasing the entropy of a system will increase the probability of spontaneous change, and increasing the temperature of a system will increase the probability of spontaneous change
Verified step by step guidance1
Understand the equation: The equation \( \Delta G = \Delta H - T\Delta S \) represents the Gibbs free energy change, where \( \Delta G \) is the change in free energy, \( \Delta H \) is the change in enthalpy, \( T \) is the temperature in Kelvin, and \( \Delta S \) is the change in entropy.
Identify the conditions for spontaneity: A process is spontaneous if \( \Delta G < 0 \). This means that the free energy of the system decreases.
Analyze the effect of enthalpy: A decrease in \( \Delta H \) (exothermic reaction) will contribute to a decrease in \( \Delta G \), thus increasing the probability of a spontaneous change.
Analyze the effect of entropy: An increase in \( \Delta S \) will also contribute to a decrease in \( \Delta G \) because the term \( -T\Delta S \) becomes more negative, thus increasing the probability of a spontaneous change.
Analyze the effect of temperature: Increasing the temperature \( T \) will amplify the effect of \( \Delta S \) on \( \Delta G \). If \( \Delta S \) is positive, a higher temperature will make \( -T\Delta S \) more negative, thus increasing the probability of a spontaneous change.
Related Videos
Related Practice
Chemical Reactions practice set
Problem sets built by lead tutorsExpert video explanations