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General Chemistry II

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The equillibrium constant (Kp) for the interconversion of PCl5 and PCl3 is 0.0121:

PCl5(g) --> PCl3(g) + Cl2(g)

A vessel is charged with PCl5, giving a initial pressure of 0.123 atm. At equillibrium, the partial pressure of PCl3 is _____ atm.

  • General Chemistry II -

    .........PCl5 ==> PCl3 + Cl2
    initial...0.123.....0.......0
    change...-2p........p.......p
    equil...0.123-2p.....p......p

    Substitute the equilibrium values into the expression for Kp and solve for p.
    Post your work if you get stuck.

  • General Chemistry II -

    .0330

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