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Chemistry question help? Equilibrum

  1. Nov 26, 2012 #1
    Reacton between the substances is A+B--> 2C where Pa=3 atm,Pb=2 atm.The reaction moves to the right until 70 percent of B has reacted and we have the equilibrum.FFind Pa,Pb,Pc and the constant of equilibrum

    Pa Pb Pc

    So in the beginning 3 2 0

    The change - x -x +2x How do I find Pa ,Pb and Pc here?
  2. jcsd
  3. Nov 26, 2012 #2
    You are told that 70% of B has reacted....
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