Phosphine, PH₃, a reactive and poisonous compound, reacts with oxygen as follows: 4PH₃(g) + 8O₂(g) $\rightarrow$P₄O₁₀(s) + 6H₂O(g) If 9.2 moles of phosphine react with sufficient oxygen, how many moles of P₄O₁₀ should form?

Question

Quizplus · Accepted Answer

From the balanced equation, we can see that every 4 moles of PH₃ that react with 8 moles of oxygen yield 1 mole of P₄O₁₀. Therefore, if 9.2 moles of PH₃ react, we can set up a proportion: 4 moles PH₃ / 8 moles O₂ = x moles P₄O₁₀ / 9.2 moles PH₃ Solving for x, we get x = 2.3 moles. Therefore, the answer is D.

Phosphine, PH3, a Reactive and Poisonous Compound, Reacts with Oxygen →\rightarrow→

Phosphine, PH₃, a Reactive and Poisonous Compound, Reacts with Oxygen $\rightarrow$