If the change in free energy of a system is -899 Jmol-1 and the entropy change is 10Jmol-1k-1 at 250C, calculate the enthalpy change.
Question 1 Report
If the change in free energy of a system is -899 Jmol-1 and the entropy change is 10Jmol-1k-1 at 250C, calculate the enthalpy change.
Answer Details
The enthalpy change can be calculated using the formula:
ΔG = ΔH - TΔS
where ΔG is the change in free energy, ΔH is the change in enthalpy, ΔS is the change in entropy, and T is the temperature in Kelvin.
Plugging in the values given:
-899 Jmol-1 = ΔH - (250+273)K * 10Jmol-1K-1
Solving for ΔH:
ΔH = -899 Jmol-1 + (523K * 10Jmol-1K-1)
ΔH = -899 Jmol-1 + 5230 Jmol-1
ΔH = +4331 Jmol-1
Therefore, the enthalpy change is +4331 Jmol-1, which corresponds to +2081 Jmol-1.
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