In the combustion reaction CH4+2O2 yield CO2 + 2H2Owhich reactant has the greatest rate of disappearance?

To consume the 2.8 moles of CH4 we need 5.6 moles of O2 since the molar ratio is 1:2. We have only 3 moles of O2 ; therefore, O2 is the limiting reactant.

Explanation:

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andromache andromache · Answer 2 · 2022-04-26T16:24:16+02:00

The reaction that has the greatest rate of disappearance is to be considered as the oxygen.

The Reactant that has the greatest rate of disappearance:

Since the chemical equation is

CH4(g) + 2 O2(g) ---------------- CO2(g) + 2H2O(g)

For consuming the 2.8 moles of CH4 we needed the 5.6 moles of oxygen as the molar ratio is 1:2

Also, As per stoichiometry, Oxygen disappears with twice the rate as compared to Methane.

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