Question

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 set up and answer with unit

Answer 1

The mass of CH₄ that is consumed is 10.598 g.

What is enthalpy?

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

Learn more about enthalpy:

brainly.com/question/14047927

#SPJ4