How many grams of PH₃ are formed by the complete reaction of 52.5 g of H₂? A) 885 g B) 590 g C) 17.4 g D) 8.68 g E) 0.843 g

Question

Quizplus · Accepted Answer

The balanced chemical equation for the reaction between H₂ and PH₃ is: 2 H₂ + PH₄ → 2 PH₃ + H2S First, we need to convert the given mass of H₂ to moles using its molar mass: 52.5 g H₂ × (1 mol H₂/ 68.13 g H₂) = 0.771 mol H₂ According to the stoichiometry of the balanced equation, 2 moles of H₂ give 2 moles of PH₃: 2 mol H₂ → 2 mol PH₃ 0.771 mol H₂ will give: 2 mol PH₃ × (0.771 mol H₂/2 mol H₂) = 0.771 mol PH₃ Finally, we can convert the moles of PH₃ to grams using its molar mass: 0.771 mol PH₃ × (390.4 g PH₃/1 mol PH₃) = 301.4 g PH₃ Therefore, the answer is B) 590 g.

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