Stoichiometry: oxygen required for CO to CO₂ conversion Reaction: CO + (1/2) O₂ → CO₂. For 1 kg of CO producing 11/7 kg of CO₂, compute the required mass of O₂ (in kg). Choose the correct value.

Given/Reaction

• CO + (1/2) O₂ → CO₂
• Molar masses: CO = 28, O₂ = 32, CO₂ = 44 (kg per kmol).

Step-by-step calculation
28 kg CO needs (1/2)×32 = 16 kg O₂ and forms 44 kg CO₂.Per 1 kg CO: O₂ required = 16/28 = 4/7 kg; CO₂ formed = 44/28 = 11/7 kg (matches the statement).

Final Answer
4/7 kg of O₂