A laboratory technician has a 28.3 g sample of benzoic acid (C₇H₆O₂)
PHYSICS · Multi-part · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter
Problem
A laboratory technician has a 28.3 g sample of benzoic acid (C₇H₆O₂). The specific heat capacity of benzoic acid is reported as 1.25 J g⁻¹ K⁻¹.
The technician plans to raise the temperature of the sample from 18.6 °C to 83.4 °C.
(a) Calculate the molar heat capacity of benzoic acid (in J mol⁻¹ K⁻¹).
(b) Determine the amount of heat (in kJ) required to carry out the heating described above.
(c) Express the answer from part (b) in calories (1 cal = 4.184 J).