66.5k views
0 votes
In the chemical reaction CH4+2O2​→CO2+2H2O, if 10 moles of H2O are produced, how many moles of CO2 are also produced?

a) 5
b) 10
c) 15
d) 20

1 Answer

3 votes

Final answer:

Using the stoichiometric relationship of the balanced chemical equation CH4 + 2O2 → CO2 + 2H2O, for every 10 moles of H2O produced, 5 moles of CO2 are produced, since the ratio of methane to water is 1:2 and methane to carbon dioxide is 1:1.

Step-by-step explanation:

If 10 moles of H2O are produced in the chemical reaction CH4+2O2​→CO2+2H2O, we can use the stoichiometry of the balanced equation to determine how many moles of CO2 are also produced. The balanced equation shows a 1:1 ratio between methane (CH4) and carbon dioxide (CO2), and a 1:2 ratio between methane and water (H2O). Since 10 moles of water are produced, we can infer that 5 moles of methane were used because it takes 1 mole of methane to produce 2 moles of water.

Following the 1:1 ratio between methane and carbon dioxide in the chemical equation, if 5 moles of methane produce 10 moles of water, then these 5 moles of methane will also produce 5 moles of CO2. Therefore, the answer to the student's question is (a) 5 moles of CO2 are produced when 10 moles of H2O are formed.

User ZillGate
by
9.2k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.