Concentration

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jlinwashington1B
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Joined: Fri Sep 28, 2018 12:22 am

Concentration

Postby jlinwashington1B » Wed Jan 16, 2019 9:10 pm

What's the difference between Q & K

Andre_Galenchik_2L
Posts: 69
Joined: Fri Sep 28, 2018 12:23 am

Re: Concentration

Postby Andre_Galenchik_2L » Wed Jan 16, 2019 9:12 pm

K is the actual equilibrium constant of a reaction at a certain temperature. Q is called the reaction quotient and is just used as a reference point when the reaction you have at hand is not yet at equilibrium. They both have the same formula, it is just that K uses the formula when the reaction is at equilibrium while Q does it while the reaction is not at equilibrium.

Joanna Pham - 2D
Posts: 113
Joined: Fri Apr 06, 2018 11:04 am

Re: Concentration

Postby Joanna Pham - 2D » Wed Jan 16, 2019 9:19 pm

Adding on to what Andre said, if Q < K, then it means there's a greater concentration of reactants, which means the reaction will favor and produce more products (reaction goes to the right) since it'll want to balance out the equation. However, if Q > K, then it means there's a greater amount of products, which means the reaction will favor and produce more reactants to balance the equation out .

Vicky Lu 1L
Posts: 60
Joined: Fri Sep 28, 2018 12:18 am

Re: Concentration

Postby Vicky Lu 1L » Wed Jan 16, 2019 11:17 pm

K stands for Equilibrium Constant which describes the reaction at equilibrium. Q is the reaction quotient which describes the reaction at any point in time. We compare K and Q as it will tell us whether the reaction is favoring the reactant, products, or neither. If Q>K, then he reaction favors the reactant, Q<K then the reaction favor the product and if Q=K then the reaction is at equilibrium.

Eric Quach 1C
Posts: 30
Joined: Fri Sep 28, 2018 12:20 am

Re: Concentration

Postby Eric Quach 1C » Wed Jan 16, 2019 11:34 pm

K is the equilibrium constant and represents the ratio of products to reactants at equilibrium. While Q is the reaction quotient and is the ratio of products to reactants at a certain point in time (can be before or at equilibrium). Remember if Q does not equal K that means the reaction is not at equilibrium and will either go through the forward reaction or backward reaction in order to reach equilibrium.


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