Chapter 13, Problem 64AE

Interpretation Introduction

Interpretation:

Energy needed to change $50\text{ g}$ of $\text{Cu}$ to liquid at melting point has to be determined.

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 as follows:

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

Heat of fusion is quantity of heat required to convert liquid to solid. Every substance has different heat of fusion. It is represented as ${\text{ΔH}}_{\text{fus}}$ and calculated as follows:

  $\text{q}=\left(\text{mass}\right)\left({\text{ΔH}}_{\text{fus}}\right)$