What mass of ch4 is consumed when 587. 9 kj of energy is evolved from the combustion of a mixture of ch4(g) and o2(g)? show the

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Juliette [100K] · Answer 1 · 2024-02-12T04:13:58+03:00

The mass of CH₄ that is consumed is 10.598 g.

<h3>What is enthalpy?</h3>

The enthalpy of a system is defined as the sum of the internal energy of a system and the energy that is produced due to its pressure and volume.

It is given by

H = U+PV

The following reaction takes place during the combustion of CH₄

$CH_4(g)+2O_2(g)\rightarrow CO_2(g)+2H_2O(g)$

Energy evolved during the combustion, E = 587.9 kJ

Enthalpy of combustion of methane, ∆H = 890.3 kJ

$No of moles of CH_4 =\frac{energy evolved}{enthalpy of combustion}$

= 587.9 /890

Mass of CH₄ that is consumed = no of moles × molar mass of CH₄

= 587.9 /890 × 16

= 10.598 g

The mass of CH₄ which is consumed is 10.598 g

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