Question

What is the value for ∆G at 300 K if AH = 27 kJ/mol and AS = 0.09 kJ/(mol-K)?

A. ∆G = 54 kJ/mol
B. ∆G=-18 kJ/mol
C. ∆G= 0 kJ/mol
D. ∆G = 27 kJ/mol

Answer 1

The value of ΔG at 300 K, with the given ΔH and ΔS, is calculated using the formula ΔG = ΔH - TΔS, resulting in a value of 0 kJ/mol. Hence, option (C) is correct.

Step-by-step explanation:

The student has asked for the value of ΔG at 300 K with given values of ΔH = 27 kJ/mol and ΔS = 0.09 kJ/(mol-K). The formula to calculate ΔG (ΔG = ΔH - TΔS) should be used.

Plugging in the given values:

ΔG = ΔH - TΔS

ΔG = 27 kJ/mol - (300 K)(0.09 kJ/(mol-K))

ΔG = 27 kJ/mol - (27 kJ/mol)

Thus, ΔG at 300 K is:

ΔG = 0 kJ/mol