Reaction Q

Moderators: Chem_Mod, Chem_Admin

Emily Orozco L4
Posts: 45
Joined: Fri Sep 28, 2018 12:29 am

Reaction Q

Postby Emily Orozco L4 » Sun Jan 12, 2020 5:15 pm

What does the reaction quotient tell us about the reaction?

Anna Chen 1K
Posts: 104
Joined: Thu Jul 25, 2019 12:18 am

Re: Reaction Q

Postby Anna Chen 1K » Sun Jan 12, 2020 5:24 pm

Q determines which direction a reaction will proceed at any time during the reaction.
If Q < K at some time during the reaction, then there are more reactants than products and the forward reaction is favored.
If Q > K at some time during the reaction, then there are more products than reactants and the reverse reaction is favored.

peteryim
Posts: 54
Joined: Sat Sep 07, 2019 12:17 am

Re: Reaction Q

Postby peteryim » Sun Jan 12, 2020 5:28 pm

To clarify further upon Anna's comment, when the forward reaction is favored, more products will be created, and the concentration of products will grow. If the reverse reaction is favored, more reactants will be created, and the concentration of reactants will increase.

Q is relevant because it compares to K, the equilibrium constant. Q will eventually become K at some point, and so the concentration of reactants/products must adjust accordingly.

Eva Zhao 4I
Posts: 101
Joined: Sun Sep 29, 2019 12:16 am

Re: Reaction Q

Postby Eva Zhao 4I » Tue Jan 21, 2020 10:12 am

Q expresses the relative ratio of products to reactants at a given instant not necessarily at equilibrium, which is why you can compare Q with K to determine the direction of the reaction. The reaction shifts right if Q<K, shifts left if Q>K, and is at equilibrium is Q=K.

Minh Ngo 4G
Posts: 137
Joined: Thu Jul 25, 2019 12:17 am

Re: Reaction Q

Postby Minh Ngo 4G » Tue Jan 21, 2020 10:17 am

Reaction Quotient, Q, tells us the direction the rxn will shift in order to achieve equilibrium

Justin Quan 4I
Posts: 104
Joined: Sat Sep 14, 2019 12:17 am

Re: Reaction Q

Postby Justin Quan 4I » Tue Jan 21, 2020 10:25 am

To add on, since Q is the relative ratio of products to reactants at a given instant, you know the reaction shifts right if Q<K and shifts left if Q>K.When Q=K, the reaction is at equilibrium. To summarize, finding Q helps you determine what direction the reaction will proceed based on the ratio between products to reactants

205291012
Posts: 50
Joined: Mon Nov 11, 2019 12:17 am

Re: Reaction Q

Postby 205291012 » Tue Jan 21, 2020 11:14 pm

Q tells us which direction the reaction will proceed when you measure the ratio of reactants to products at any given time. By comparing Q to K, you can figure out if the reaction will shift towards products or reactants.

alex_4l
Posts: 109
Joined: Thu Sep 26, 2019 12:18 am

Re: Reaction Q

Postby alex_4l » Tue Jan 21, 2020 11:18 pm

Basically Q is referring to anything other than the equilibrium


Return to “Non-Equilibrium Conditions & The Reaction Quotient”

Who is online

Users browsing this forum: No registered users and 1 guest