Need a better understanding of a Dr. Collin's Chem Question

Discussion in 'PCAT Discussions' started by MegaRave214, Oct 11, 2017.

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  1. MegaRave214

    MegaRave214 2+ Year Member

    May 25, 2015
    N2(g) + 3H2(g) <--> 2NH3(g)

    If the volume of the container in which the above equilibrium had been established were to be halved, then when equilibrium were reestablished the

    -Moles of N2 would be increased
    -Moles of NH3 would be increased (ANSWER)
    -Moles of NH3 would be decreased
    -Moles of NH3 would remain the same

    Thank you
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  3. manan982


    Nov 3, 2015
    When volume is halved, the pressure increases by a factor of 2 because they're inversely proportional to each other. So, when the pressure increases, equilibrium would get shifted to side with the less moles of gas. In this case it's NH3 (2 moles) vs the left side (4 moles)

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