Assume that for a domestic hot water supply 150 kg of water per day must be heated…

CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics

Problem

Assume that for a domestic hot water supply 150 kg of water per day must be heated from 10°C to 65°C and gaseous fuel propane

\text{C}_3\text{H}_8

is used for this purpose. What mole and volume of propane in litre at STP would have to be used for heating domestic water?

\Delta H

for combustion of propane is -2050 kJ and specific heat of water is

4.184 \times 10^{-3} \text{ kJ/g}