ThermochemistryHard

Question

The enthalpy of combustion of methane is −890 kJ. The volume of methane at 0o C and 1 atm to be burnt to produce 2670 kJ heat is

Options

A.33.6 L
B.67.2 L
C.7.47 L
D.11.2 L

Solution

Moles of CH4 burned = $\frac{2670}{890} = 3$

∴ Volume of CH4 = $3 \times 22.4 = 67.21$

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