Phosphorus pentachloride, PCl5, a white solid that has a pungent, unpleasant odor, is used as a catalyst for certain organic reactions. Calc

Question

Phosphorus pentachloride, PCl5, a white solid that has a pungent, unpleasant odor, is used as a catalyst for certain organic reactions. Calculate the number of moles in 38.7 g of PCl5.

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Thanh Thu 6 months 2021-07-18T11:41:54+00:00 1 Answers 209 views 0

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    2021-07-18T11:43:09+00:00

    Answer:

    0.186 moles

    Explanation:

    In order to convert grams of PCl₅ into moles, we need to use its molar mass:

    • Molar Mass of PCl₅ = Molar mass of P + (Molar mass of Cl)*5
    • Molar Mass of PCl₅ = 208.24 g/mol

    Then we proceed to calculate the number of moles:

    • 38.7 g ÷ 208.24 g/mol = 0.186 mol
    • There are 0.186 moles of PCl₅ in 38.7 g of PCl₅.

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