ThermochemistryHard
Question
Assume that for a domestic hot water supply, 160 kg of water per day must be heated from 10oC to 60oC and gaseous fuel propane, C3H8, is used for this purpose. What volume of propane gas at STP would have to be used for heating domestic water, with efficiency of 40%? Heat of combustion of propane is −500 kcal/mol and specific heat capacity of water is 1.0 cal/K-g.
Options
A.896 L
B.908 L
C.896 m3
D.908 m3
Solution
Heat liberated from propane = Heat absorbed by water
Or, $n \times 500 \times 10^{3} \times \frac{40}{100} = 160 \times 10^{3} \times 1 \times 50 \Rightarrow n = 40$
Create a free account to view solution
View Solution FreeMore Thermochemistry Questions
Stearic acid [CH3(CH2)16CO2H] is a fatty acid. 1.0 g of stearic acid was burned in a bomb calorimeter. The bomb had a he...The standard molar enthalpies of formation of cyclohexane (l) and benzene(l) at 298 K are −156 and +49 kJ/ mol, respecti...When 1 mole of Na(s) is dissolved in large volume of water at 298 K and 1 bar, 184 kJ/mol heat is released. When 1 mole ...The reaction of zinc metal with hydrochloric acid was used to produce 1.5 moles of hydrogen gas at 298 K and 1 atm press...Oxidising power of chlorine in aqueous solution can be determined by the parameters indicated below: The energy involved...