Question

The solid material is supplied with the heat at a constant rate. The temperature of the material is changing with heat input as shown in the figure. What does slope $DE$ represents?

• A. Latent heat of liquid
• B. Latent heat of vapour
• C. Heat capacity of vapour
• D. Iinverse of heat capacity of vapour

Answer 1

The correct option is D Iinverse of heat capacity of vapour

Slope $DE=\frac{\Delta T}{H}={\left(\frac{H}{\Delta T}\right)}^{-1}=C^{-1}$
$C^{-1}\to$ inverse heat capacity of vapour.
Also $AB$ & $CD$ represent phase change.