Gibb's free energy change for a process at 25°c and 35°c are-85.77 and-83.68 kj respectively calculate change in enthalpy for this process 30°c
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Answer:
Assume that the enthalpy change and the entropy change are not affected by the temperature change of about 10
o
C.
ΔG=ΔH−TΔS
−85770=ΔH−298×ΔS...... (1)
−83680=ΔH−308ΔS......(2)
From (1) ΔS=
298
ΔH+85770 ......(3)
Substitute (3) into (2)
−83860=ΔH−
298
308
(ΔH+85770)
ΔH=−148052kJ/mol=−148.05J/mol
Explanation:
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