Chapter 13.4, Problem 13.5P

Interpretation Introduction

Interpretation:

Energy required to change $50.0\text{ g}$ of ethyl alcohol has to be calculated.

Concept Introduction:

Heat required by $\text{1 g}$ of a substance to increase the temperature by $1°\text{C}$ is termed as specific heat capacity of that substance. Energy absorbed or released by the substance is calculated by formula as follows:

  $\text{Energy}=\left(\text{mass}\right)\left(\text{specific heat}\right)\left(\text{change in temperature}\right)$

Heat of vaporization is the quantity of heat absorbed on vaporization of a liquid. Every substance has different heat of vaporization. It is represented as ${\text{ΔH}}_{\text{v}}$ and calculated by formula as follows:

  $\text{Energy}=\left(\text{mass}\right)\left({\text{ΔH}}_{\text{v}}\right)$