Answer:
ΔS = 0.0906 kJ/K
Explanation:
The entropy of a reversible process is the amount of heat energy absorbed in the process divided by the temperature in degree Kelvin. Mathematically,
ΔS = Q/T
Where:
ΔS = change in entropy (kJ/K)
Q = is the amount of heat energy absorbed (kJ)
T = Temperature of the system (K)
Thus, the change in entropy that occurs in the system when 3.10 mole of isopropyl alcohol melts at its melting point (-89.5∘C) is calculated as shown below:
Q = 3.10 mol * 5.37 kJ/mol = 16.647 kJ
T = -89.5 + 273.15 = 183.65 K
Therefore,
ΔS = Q/T = 16.647 kJ/183.65 K = 0.0906 kJ/K
