2018 · Q2
How many moles of CO can be obtained by reacting 2.0 mole of CH₄ with 2.0 mole of O₂ according to the equation given below? CH₄(g) + ½O₂ → CO + 2H₂
General KnowledgeChemistry
- A2.0
- B0.5
- C2.5
- D4.0
Explanation
The balanced equation is CH4 + 1/2 O2 -> CO + 2H2, so one mole of methane consumes half a mole of oxygen to yield one mole of carbon monoxide. The 2.0 moles of CH4 present require only 1.0 mole of O2, while 2.0 moles of O2 are available, making methane the limiting reactant. Since each mole of methane yields one mole of CO, 2.0 moles of methane give 2.0 moles of CO. Hence the answer is 2.0.