IIeat of combustion of CII4, C2 II4 and C2 II6 are 890 , 1411 and 1560 kJ / mol, respectively.

step 1 Heat of combustion of methane, ethylene and ethyane are 890, 1411 and 1560 kilo per mole respect

IIeat of combustion of CII4, C2 II4 and C2 II6 are 890 ,...

IIeat of combustion of $\mathrm{CII}_{4}, \mathrm{C}_{2} \mathrm{II}_{4}$ and $\mathrm{C}_{2} \mathrm{II}_{6}$ are 890 , 1411 and $1560 \mathrm{~kJ} / \mathrm{mol}$, respectively. Which has the lowest calorific fucl value in $\mathrm{kJ} / \mathrm{g}$ ? (1) $\mathrm{CH}_{4}$ (2) $\mathrm{C}_{2} \mathrm{H}_{4}$ (3) $\mathrm{C}_{2} \mathrm{H}_{6}$ (4) All

IIeat of combustion of $\mathrm{CII}_{4}, \mathrm{C}_{2} \mathrm{II}_{4}$ and $\mathrm{C}_{2} \mathrm{II}_{6}$ are 890 , 1411 and $1560 \mathrm{~kJ} / \mathrm{mol}$, respectively. Which has the lowest calorific fucl value in $\mathrm{kJ} / \mathrm{g}$ ?
(1) $\mathrm{CH}_{4}$
(2) $\mathrm{C}_{2} \mathrm{H}_{4}$
(3) $\mathrm{C}_{2} \mathrm{H}_{6}$
(4) All

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Heat of Combustion

This is the amount of energy released when one mole of a substance undergoes complete combustion in the presence of oxygen. It is typically expressed in kilojoules per mole (kJ/mol) and provides a measure of the intrinsic energy content of a compound.

Molecular Weight

Molecular weight represents the mass of one mole of a substance, measured in grams per mole (g/mol). It is a key factor in converting energy values from a molar basis to a mass basis, which is essential for comparing the energy content of different fuels per gram.

Calorific Value

Also known as energy density, calorific value is defined as the energy released per unit mass of fuel (kJ/g). It is determined by dividing the heat of combustion (kJ/mol) by the molecular weight of the fuel, allowing for a direct comparison of fuel efficiency on a mass basis.

Unit Conversion in Energetics

This concept involves converting thermochemical data from molar units (such as kJ/mol) to mass units (such as kJ/g). It is crucial in practical applications where energy per unit mass is more relevant, particularly in assessing the performance and efficiency of various fuels.

Please give Ace some feedback