K vs Q  [ENDORSED]

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DanielaWong_2G
Posts: 20
Joined: Wed Sep 21, 2016 2:56 pm

K vs Q

Postby DanielaWong_2G » Tue Nov 15, 2016 9:42 pm

Hello! I know that Q and K are calculated the same way, but can someone explain what the difference between the two is?
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mikezargari
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Re: K vs Q  [ENDORSED]

Postby mikezargari » Tue Nov 15, 2016 9:49 pm

K is simply the value calculated when the reaction is at equilibrium. You use the concentrations of the reactants and products at equilibrium. Q is pretty much any other point in time for the reaction.
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Chem_Mod
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Re: K vs Q

Postby Chem_Mod » Tue Nov 15, 2016 10:27 pm

In addition, comparing Q and K allows you to determine the direction in which the reaction will proceed, or where equilibrium "lies" or "shifts" if Q does not equal K.
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emmajanibekyan_4I
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Joined: Wed Sep 21, 2016 2:57 pm

Solids in Q

Postby emmajanibekyan_4I » Thu Nov 17, 2016 6:19 pm

When calculating Q, as opposed to K, do we include solids in the calculation?
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Arianna Brooks 4A
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Joined: Wed Sep 21, 2016 2:57 pm

Re: Solids in Q

Postby Arianna Brooks 4A » Thu Nov 17, 2016 7:12 pm

emmajanibekyan_4I wrote:When calculating Q, as opposed to K, do we include solids in the calculation?

No you still don't include solids
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