doubling pressure

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Ruiting Jia 4D
Posts: 65
Joined: Fri Sep 28, 2018 12:27 am

doubling pressure

Postby Ruiting Jia 4D » Sat Jan 12, 2019 9:05 pm

When talking about Le Chatelier's implications on changing physicial parameters, such as pressure, why did Dr. Lavelle double pressure to find the new initial concentration of the equation : N2 + 3 H2 <=> 2 NH3 ??

AngelaZ 1J
Posts: 65
Joined: Fri Sep 28, 2018 12:23 am

Re: doubling pressure

Postby AngelaZ 1J » Sat Jan 12, 2019 9:28 pm

Lavelle was giving an example of how a reaction responds to minimize the effect of increasing pressure (by decreasing volume). If P doubled (V halved), then there would be new initial concentrations (since concentration=moles/volume). Q would then be solved for these new concentrations so that we could compare Q to K and see which way the reaction would shift. In this case, Q<K so the reaction would shift to the right.

deepto_mizan1H
Posts: 65
Joined: Fri Sep 28, 2018 12:16 am

Re: doubling pressure

Postby deepto_mizan1H » Sat Jan 12, 2019 10:55 pm

In addition to the reply above, it is a strong example of how the principle works to rebalance the system (pushing the equilibrium to either direction).


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