Phosphine, an Extremely Poisonous and Highly Reactive Gas, Reacts with Oxygen

question 56

Multiple Choice

Phosphine, an extremely poisonous and highly reactive gas, reacts with oxygen gas to form tetraphosphorus decaoxide and water. PH₃(g) + O₂(g) → P₄O₁₀(s) + H₂O(g) [unbalanced]
Calculate the mass of P₄O₁₀(s) formed when 225 g of PH₃ reacts with excess oxygen.

• A) 1880 g
• B) 940. g
• C) 900. g
• D) 470. g
• E) 56.3 g

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