Tại một nhiệt độ nào đó có cân bằng sau: CO2 (k) + H2 (k) -> CO (k) + H2O (k)
Kc = 9/4
Giả sử lúc đầu ta đưa vào bình phản ứng 1 mol CO2, 1 mol H2, 1 mol CO và 1 mol H2O.
Vậy tại điều kiện cân bằng, số mol CO có là?

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