2021 · Q75
Consider the following balanced equation: CO (g) + 2H2 (g) → CH3 OH (I) How many moles of CH3OH (I) can be obtained by reacting 2.0 mole of CO (g) with 2.0 mole of H2 (g)?
General ScienceChemistry
- A1
- B2
- C3
- D4
Explanation
The balanced equation CO + 2H₂ → CH₃OH requires 2 moles of H₂ per mole of CO. The 2.0 moles of H₂ available can react with only 1.0 mole of CO, so hydrogen is the limiting reagent and 1.0 mole of CO remains in excess. The maximum methanol formed is therefore 1.0 mole. Hence (A) 1 is correct.