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Ethanol has a normal boiling point of 352 K, and its \(\Delta H_{vap}\) is 38.6 kJ/mol. Calculate the molar entropy of vaporization (\(\Delta S_{vap}\)).

Answer :

Final answer:

The molar entropy of vaporization (?svap) for ethanol is 0.11 kJ/(mol·K).

Explanation:

To calculate the molar entropy of vaporization (?svap), we can use the formula ?svap = ?Hvap / T, where ?Hvap is the molar enthalpy of vaporization and T is the temperature in Kelvin. In this case, ?Hvap is given as 38.6 kJ/mol and the boiling point is 352 K.

Substituting these values into the formula, we get ?svap = 38.6 kJ/mol / 352 K = 0.11 kJ/(mol·K).

Therefore, the molar entropy of vaporization (?svap) for ethanol is 0.11 kJ/(mol·K).

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