Dihydrogen as a Fuel

Approximately how much energy is released on combustion of one mole of liquid dihydrogen?

How much energy is released when $1 \mathrm{L}$ of liquid hydrogen is burnt?

Liquid hydrogen has a much higher specific energy than LPG, natural gas, and liquid octane.

Octane in liquid state releases _____ $\mathrm{kJ}/\mathrm{gm}$ of energy on combustion.

The combustion reaction of liquid octane has a negative enthalpy change.

The amount of energy releases during the combustion of methane is _____$\mathrm{kJ}$.

Compare the efficiency of methane and hydrogen fuel. Express the various advantages of hydrogen fuel.

Express, what amount of energy released from the combustion of methane.

Combustion of gaseous hydrogen produces a large amount of energy. Define auto-ignition temperature of a fuel.

Identify the product formed in the combustion reaction of gaseous hydrogen to release energy:

${\mathrm{H}}_2+\frac{1}{2}{\mathrm{O}}_2\stackrel{ }{\to }?+286,000 \mathrm{J}$

Write a short note on the energy released on combustion of gaseous hydrogen.

Write about the grades of $\mathrm{LPG}$ available as heating fuels to get energy by combustion.

Compare the amount of energy released by the combustion of $\mathrm{LPG}$ and dihydrogen.

Explain, $\mathrm{LPG}$ as an energy source.

Explain about the production of energy from dihydrogen.

Combustion of octane takes place in an automobile engine.The homogeneous equation of combustion is :${\mathrm{C}}_8{\mathrm{H}}_{18}+\frac{25}{2}{\mathrm{O}}_2\to 8 {\mathrm{CO}}_2+9 {\mathrm{H}}_2\mathrm{O}$

the sign of $∆\mathrm{G}$ for the reaction will be :

The fuel we burn in our car's engine contains _____ .

What is the combustion reaction of octane ?

What is the combustion of octane ?

Explain the following:

Liquid hydrogen cannot be used as a fuel easily.