Question

how many moles of o2 are required to generate 12 moles so2 gas? 2cufes2 + 5o2 → 2cu + 2feo + 4so2 ? mol o2

Explanation:

Step1: Analyze the mole ratio

From the balanced chemical equation \(2CuFeS_{2}+5O_{2}\to2Cu + 2FeO+4SO_{2}\), the mole ratio of \(O_{2}\) to \(SO_{2}\) is \(n(O_{2}):n(SO_{2}) = 5:4\).

Step2: Set up the proportion

Let \(x\) be the moles of \(O_{2}\). Using the ratio \(\frac{x}{12}=\frac{5}{4}\).

Step3: Solve for \(x\)

Cross - multiply: \(4x=12\times5\), so \(x=\frac{12\times5}{4}\).
Calculate \(x = 15\).

Answer:

\(15\)