If there are 3 moles of gas A, 4 moles of gas b and 5 moles of gas c I’m a mixture of gases and the pressure A is found to be 2.5 atm, what

Question

If there are 3 moles of gas A, 4 moles of gas b and 5 moles of gas c I’m a mixture of gases and the pressure A is found to be 2.5 atm, what is the total pressure of the sample of gases

in progress 0
Jezebel 2 weeks 2021-08-28T10:05:55+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-08-28T10:07:39+00:00

    Answer:

    Total pressure = 10 atm

    Explanation:

    The excersise can help to understant the concept of mole fraction

    Mole fraction is defined as:

    moles of gas / Total moles = pressure of that gas / Total pressure

    Both can be summed.

    Sum of moles of each gas in the mixture = Total moles

    Sum of pressures of each gas in the mixture = Total pressure

    Those, are laws for gases.

    Total moles: 3 mol of gas A + 4 moles of gas B + 5 moles of C

                     = 12 total moles

    Pressure of A is 2.5 atm.

    We replace data at the mole fraction relation

    moles of A / total moles = Pressure of A  / Total pressure

    3 moles / 12 moles = 2.5 atm / Total pressure

    Total pressure = 2.5 atm / (3mol/12mol)

    Total pressure = 10 atm

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )