Question on: JAMB Chemistry - 2024

Here's how to solve this problem:

1. Write the balanced chemical equation for the combustion of ethanol:
   C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O
2. Calculate the number of moles of oxygen (O₂) used:
   Molar mass of O₂ = 2 × 16 g/mol = 32 g/mol
   Moles of O₂ = mass / molar mass = 6 g / 32 g/mol = 0.1875 mol
3. Determine the mole ratio between O₂ and CO₂ from the balanced equation:
   3 moles of O₂ produce 2 moles of CO₂
4. Calculate the moles of CO₂ produced:
   Moles of CO₂ = 0.1875 × (2/3) = 0.125 mol

Therefore, the moles of CO₂ produced is 0.125 mol.