47.9 ml hrdrogen is collected at 26° Celsius and 718 torr. Find the volume occupied at STP

Question

47.9 ml hrdrogen is collected at 26° Celsius and 718 torr. Find the volume occupied at STP

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Kim Cúc 5 years 2021-09-03T10:24:16+00:00 1 Answers 4 views 0

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  1. Dau
    0
    2021-09-03T10:25:53+00:00
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    Answer:

    The volume at STP is 41.3mL

    Explanation:

    To solve this question we must find the volume using the combined gas law. The equation is:

    P1V1 / T1 = P2V2 / T2

    Where P is pressure, V volume and T absolute temperature of 1, initial state and 2, final state of the gas.

    P1 = 718torr

    V1 = 47.9mL

    T1 = 26°C + 273.15 = 299.15K

    P2 = 760torr at STP

    V2 = ?

    T2 = 273.15K at STP

    Replacing:

    718torr*47.9mL / 299.15K = 760torr*V2 / 273.15K

    41.3mL = V2

    The volume at STP is 41.3mL

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