The mathematical expression for the change in free energy of a system is ΔG =ΔH - TΔS. Which of the following is (are) correct?
A) ΔS is the change in enthalpy, a measure of randomness.
B) ΔH is the change in entropy, the energy available to do work.
C) ΔG is the change in free energy.
D) T is the temperature in degrees Celsius.

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katyyym35 katyyym35 · Answer 1 · 2019-03-04T23:22:00+01:00

The correct answer is C.

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Abdulazeez10 Abdulazeez10 · Answer 2 · 2021-10-05T14:53:23+02:00

From the given expression for the change in free energy of a system is ΔG =ΔH - TΔS, ΔG is the change in free energy.

The correct option is C) ΔG is the change in free energy

From the question,

The mathematical expression for the change in free energy of a system is

ΔG =ΔH - TΔS

In the expression above,

ΔG is the change in free energy (also known as Gibbs free energy) measured in Jmol⁻¹

ΔH is the change in enthalpy measured in Jmol⁻¹

T is temperature measured in Kelvin (K)

and ΔS is the change in entropy, (a measure of randomness) measured in JK⁻¹mol⁻¹

With respect to the information given above, the only correct option is C) ΔG is the change in free energy.

Hence, from the given expression for the change in free energy of a system is ΔG =ΔH - TΔS, ΔG is the change in free energy.

The correct option is C) ΔG is the change in free energy

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