Q vs. K


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Jose Robles 1D
Posts: 100
Joined: Fri Aug 02, 2019 12:15 am

Q vs. K

Postby Jose Robles 1D » Sun Jan 12, 2020 11:13 pm

Need clarification, what is the distinction or similarities between the two?

stephaniekim2K
Posts: 79
Joined: Fri Aug 09, 2019 12:16 am

Re: Q vs. K

Postby stephaniekim2K » Sun Jan 12, 2020 11:14 pm

K is the constant at equilibrium while Q is the constant at any point in the reaction.

Jose Robles 1D
Posts: 100
Joined: Fri Aug 02, 2019 12:15 am

Re: Q vs. K

Postby Jose Robles 1D » Sun Jan 12, 2020 11:15 pm

stephaniekim2K wrote:K is the constant at equilibrium while Q is the constant at any point in the reaction.

Cool thanks!

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

Re: Q vs. K

Postby alex_4l » Sun Jan 12, 2020 11:16 pm

Q and K are similar in the sense that they are calculated the same way with products divided by reactants. They are different however with K being the equilibrium constant and Q being the reaction quotient. Q happens at any time during the reaction and K is the overall equilibrium

Brianna Becerra 1B
Posts: 117
Joined: Fri Aug 02, 2019 12:16 am

Re: Q vs. K

Postby Brianna Becerra 1B » Sun Jan 12, 2020 11:17 pm

They are similar to each other as the calculation of products divided by reactants is the same. The main difference is that k occurs at equilibrium while q occurs before equilibrium is reached. By calculating Q and comparing it to K, we can tell which way the reaction is going more towards.

Kishan Shah 2G
Posts: 132
Joined: Thu Jul 11, 2019 12:15 am

Re: Q vs. K

Postby Kishan Shah 2G » Sun Jan 12, 2020 11:18 pm

Q and K are calculated using the same rules and formula. However Q is used when you are given initial concentration/pressure values, and K is used when you are given equilibrium concentration/pressure values. You can compare Q and K to determine in which direction the reaction will proceed.

Sean Tran 2K
Posts: 65
Joined: Sat Aug 17, 2019 12:17 am

Re: Q vs. K

Postby Sean Tran 2K » Sun Jan 12, 2020 11:21 pm

Q and K are both calculated similarly, but Q can be calculated at any time during the reaction and can be compared with K to determine the direction in which the reaction is favored.

Veronica Lu 2H
Posts: 89
Joined: Wed Sep 18, 2019 12:18 am
Been upvoted: 1 time

Re: Q vs. K

Postby Veronica Lu 2H » Sun Jan 12, 2020 11:28 pm

Both are calculated using the same formulas but Q is used anytime during the reaction whilst K is calculated with equilibrium concentration and values!

Shrayes Raman
Posts: 129
Joined: Sat Jul 20, 2019 12:15 am

Re: Q vs. K

Postby Shrayes Raman » Sun Jan 12, 2020 11:51 pm

Q is basically calculated the same way as K but can be calculated at any point in a reaction not just during equilibrium

SimranSangha4I
Posts: 99
Joined: Sat Sep 14, 2019 12:17 am

Re: Q vs. K

Postby SimranSangha4I » Sun Jan 12, 2020 11:53 pm

Q is the constant through the entire equilibrium while K is the constant at equilibrium!

Angela Wu-2H
Posts: 50
Joined: Fri Aug 30, 2019 12:16 am

Re: Q vs. K

Postby Angela Wu-2H » Sun Jan 12, 2020 11:54 pm

Q is focused on the reactants and products that are gasses or aqueous solutions, meanwhile K can be for all forms including solids I believe.


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