Problem: Calculate the change in entropy that occurs in the system when 45.0 g of acetone (C3H6O) freezes at its melting point (-94.8 ˚C). ΔHfus = 5.69 kJ/mol.

🤓 Based on our data, we think this question is relevant for Professor Brayton's class at HAWAII.

FREE Expert Solution

We can use the formula below to determine the entropy change(ΔS):

$\boxed{\mathbf{∆}\mathbf{S}\mathbf{=}\frac{\mathbf{∆}{\mathbf{H}}_{\mathbf{fus}}}{\mathbf{T}}}$

where ΔH_fus is the heat of fusion

            T is the temperature in Kelvin (K)

Recall:

1 kJ = 10³ J