Chapter 12, Problem 3SAQ

Interpretation Introduction

Interpretation: The amount of heat required to vaporize $38.5\text{ g}$ of acetone at $25°C$ is to be calculated.

Concept Introduction: Heat of vaporization $\left(\Delta H_{\text{vap}}\right)$ is the amount of heat required to heat one mole of liquid.

The negative value of $\Delta H$ indicates that reaction is exothermic whereas positive value of $\Delta H$ indicates that reaction is endothermic.

The heat of vaporization is inversely proportional to temperature which means that on increasing the temperature, heat of vaporization will decrease.