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4 January, 13:48

What is the density of fluorine gas, F2, at STP? E) 0.848 g/L B) 1.18 g / L C) 1.70 g/L D) 0.589 g/L

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  1. 4 January, 14:13
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    C) 1.70 g/L

    Explanation:

    Using ideal gas equation as:

    PV=nRT

    where,

    P is the pressure

    V is the volume

    n is the number of moles

    T is the temperature

    R is Gas constant having value = 0.0821 L. atm/K. mol

    Also,

    Moles = mass (m) / Molar mass (M)

    Density (d) = Mass (m) / Volume (V)

    So, the ideal gas equation can be written as:

    PM=dRt

    At STP,

    Pressure = 1 atm

    Temperature = 273.15 K

    Molar mass of fluorine gas = 38 g/mol

    Applying the equation as:

    1 atm * 38 g/mol = d * 0.0821 L. atm/K. mol * 273.15 K

    ⇒d = 1.70 g/L
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