Chapter 12, Problem 54E

Interpretation Introduction

Interpretation: The amount of heat emitted during the condensation of $65.6\text{g}$ of isopropyl alcohol at $25°\text{C}$ is to be calculated.

Concept introduction:

Heat of condensation is the amount of heat released to condense one mole of vapor into liquid.

Heat of condensation is opposite to the heat of vaporization. Since heat is released during condensation, condensation is an exothermic process. Hence, the value of heat of condensation is written with a negative sign.

The heat of condensation is used to calculate the amount of heat released to condense a given amount of liquid at a given temperature. For this, heat of condensation is used as a conversion factor between the amount of heat required to condense a liquid and moles of the liquid.