Question

A solid of mass 2kg is heated and DH (Heat given) vsDq (change in temperature) is plotted. Specific heat of solid is –

• A. 1 J/kg/ŗC
• B. 0.5 J/kg/ŗC
• C. 2 kJ/kg/ŗC
• D. 0.5 kJ/kg/ŗC

Answer 1

Answer: (D)

0.5 kJ/kg/ŗC

Answer 2

Slope of DH vs Dq graphs give ‘heat capacity’.

\ Specific heat capacity = $\frac{heatcapacity}{mass}$

= $\frac{\tan 45º}{2}$ kJ/kg/ŗC

= 0.5 kJ/kg/ŗC