A substance increases in temperature by 167°C when a 2.56 kg sample of it absorbs 78.5 kJ of heat.

What is the specific heat capacity of the substance?

Question

A substance increases in temperature by 167°C when a 2.56 kg sample of it absorbs 78.5 kJ of heat.

What is the specific heat capacity of the substance?

| General Chemistry 2

Accepted Answer

c_S= $\frac{c_{P}}{m}$ = $\frac{q_{P}}{m ∆ T}$

q_P = energy added as heat (in J)

ΔT = change of temperature (in K)

m = mass (in g)

c_S=

\frac{78.5 \times 10^{3}}{2.56 \times 10^{3} \times 440}

= 6.97 x 10^-2 J.g^-1.K^-1

Exercise 5 | Thermochemistry