In CH4 + 2 O2 → CO2 + 2 H2O, what is the mole ratio of CO2 produced to CH4 consumed?

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Multiple Choice

In CH4 + 2 O2 → CO2 + 2 H2O, what is the mole ratio of CO2 produced to CH4 consumed?

Explanation:
In a balanced equation, the numbers in front of each substance show how many moles of each species react or are formed. Here, CH4 has a coefficient of 1 and CO2 also has a coefficient of 1, so for every mole of CH4 that reacts, exactly one mole of CO2 is produced. That makes the mole ratio of CO2 produced to CH4 consumed equal to 1:1. If you start with 1 mole of CH4, you’ll get 1 mole of CO2; with 0.5 mole of CH4, you’d get 0.5 mole of CO2, and so on.

In a balanced equation, the numbers in front of each substance show how many moles of each species react or are formed. Here, CH4 has a coefficient of 1 and CO2 also has a coefficient of 1, so for every mole of CH4 that reacts, exactly one mole of CO2 is produced. That makes the mole ratio of CO2 produced to CH4 consumed equal to 1:1. If you start with 1 mole of CH4, you’ll get 1 mole of CO2; with 0.5 mole of CH4, you’d get 0.5 mole of CO2, and so on.

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