Assertion (A): If heat of combustion of $\mathrm{C}_2 \mathrm{H}_6$ is ' $\mathrm{X}^{\prime} \mathrm{kJ}…
Assertion (A): If heat of combustion of $\mathrm{C}_2 \mathrm{H}_6$ is ' $\mathrm{X}^{\prime} \mathrm{kJ} \mathrm{mol}^{-1}$, heat liberated on combustion of $150 \mathrm{~g} \mathrm{C}_2 \mathrm{H}_6$ is $\frac{\mathrm{X}}{5} \mathrm{~kJ}$.
Reason (R): Enthalpy is an extensive property
Both (A) and (R) are correct, and (R) is the correct explanation of (A)
Both (A) and (R) are correct, but (R) is not the correct explanation of (A)