ThermochemistryHard
Question
A geyser, operating on LPG (liquefied petroleum gas) heats water flowing at the rate of 3.0 litres per minute, from 27°C to 77°C. If the heat of combustion of LPG is 40,000 J/g, then how much fuel (in g) is consumed per minute? (Specific heat capacity of water is 4200 J/kg-K)
Options
A.15.25
B.15.50
C.15.75
D.16.00
Solution
Heat released by constitution of LPG = Heat absorbed by water
w × 40000 = 3 × 4200 × 50 ⇒ w = 15.75 gm
Create a free account to view solution
View Solution FreeMore Thermochemistry Questions
Enthalpies of combustion of CH4, C2H6 and C3H8 are −210, −370 and −526 kcal/mol, respectively. Enthalpy of combustion of...The enthalpy of formation of KCl(s) from the following data is(i) KOH(aq) + HCl(aq) → KCl(aq) + H2O(l): ΔH = −13.7 kcal(...The enthalpies of formation of FeO(s) and Fe2O3(s) are −65.0 and −197.0 kcal/mol, respectively. A mixture of the two oxi...The standard enthalpy of combustion of solid boron is numerically equal to...For a specific work, on an average a person requires 5616 kJ of energy. How many kilograms of glucose must be consumed i...