Understanding Q


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briannam_1F
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Joined: Wed Sep 18, 2019 12:18 am

Understanding Q

Postby briannam_1F » Wed Jan 08, 2020 10:23 pm

When solving for Q do we omit solids and pure liquids, like when solving for K?

Hiba Alnajjar_2C
Posts: 108
Joined: Fri Aug 09, 2019 12:17 am

Re: Understanding Q

Postby Hiba Alnajjar_2C » Wed Jan 08, 2020 10:28 pm

Yes; when solving for Q, you write the expression in the same exact way you would for K, omitting pure liquids and solids. The central difference between Q and K is that K represents the value at equilibrium, while Q is the ratio of products to reactants at any time during the reaction. But you would solve for the expression and value of Q in the same exact way.

Callum Guo 1H
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Re: Understanding Q

Postby Callum Guo 1H » Wed Jan 08, 2020 10:33 pm

Yes, solving for Q is the same way you would solve for K

Daniel Toscano 1L
Posts: 95
Joined: Tue Nov 13, 2018 12:18 am

Re: Understanding Q

Postby Daniel Toscano 1L » Wed Jan 08, 2020 10:59 pm

Q is just ratio of the products and reactants when not in equilibrium, but is calculated the same way as K.

BritneyP- 2c
Posts: 101
Joined: Sat Sep 14, 2019 12:15 am

Re: Understanding Q

Postby BritneyP- 2c » Wed Jan 08, 2020 11:41 pm

Just solve Q the way you would for K. K is at equilibrium and Q is at any time.

Maya Pakulski 1D
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Joined: Thu Jul 11, 2019 12:17 am

Re: Understanding Q

Postby Maya Pakulski 1D » Thu Jan 09, 2020 8:34 am

Yes, you would still omit solids and pure liquids. You also emit these when making an ICE table.

RichBollini4G
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Joined: Wed Sep 18, 2019 12:18 am

Re: Understanding Q

Postby RichBollini4G » Thu Jan 09, 2020 9:34 am

Hiba Alnajjar_2C wrote:Yes; when solving for Q, you write the expression in the same exact way you would for K, omitting pure liquids and solids. The central difference between Q and K is that K represents the value at equilibrium, while Q is the ratio of products to reactants at any time during the reaction. But you would solve for the expression and value of Q in the same exact way.

Thank you!

Jialun Chen 4F
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Joined: Sat Sep 07, 2019 12:16 am

Re: Understanding Q

Postby Jialun Chen 4F » Thu Jan 09, 2020 9:55 am

Correct. We perform the same calculation procedure when solving for Q and K.

105335337
Posts: 103
Joined: Sat Aug 24, 2019 12:15 am

Re: Understanding Q

Postby 105335337 » Thu Jan 09, 2020 10:01 am

Yes. Q and Kc are solved the completely same way. Q is just to tell if the reaction is at equilibrium or not.

Abigail_Hagen2G
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Re: Understanding Q

Postby Abigail_Hagen2G » Thu Jan 09, 2020 11:44 am

They're solved exactly the same way.

Juana Abana 1G
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Joined: Wed Sep 18, 2019 12:15 am

Re: Understanding Q

Postby Juana Abana 1G » Thu Jan 09, 2020 11:48 am

Yes, you solve for Q the same way you would solve for K.

nicole-2B
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Joined: Fri Aug 30, 2019 12:18 am

Re: Understanding Q

Postby nicole-2B » Thu Jan 09, 2020 3:34 pm

You solve for Q the same way you solve for K.

bellaha4F
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Joined: Wed Sep 18, 2019 12:20 am

Re: Understanding Q

Postby bellaha4F » Thu Jan 09, 2020 3:54 pm

Q tells what point the reaction is at in relation to K, therefore it is solved the same way as K.

Astrid Lunde 1I
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Re: Understanding Q

Postby Astrid Lunde 1I » Thu Jan 09, 2020 4:48 pm

Yes you can solve Q the same way as you would solve K.

805097738
Posts: 180
Joined: Wed Sep 18, 2019 12:20 am

Re: Understanding Q

Postby 805097738 » Thu Jan 09, 2020 7:06 pm

do you omit pure solids and liquids while solving for K too?

Hiba Alnajjar_2C
Posts: 108
Joined: Fri Aug 09, 2019 12:17 am

Re: Understanding Q

Postby Hiba Alnajjar_2C » Sun Jan 12, 2020 10:34 pm

805097738 wrote:do you omit pure solids and liquids while solving for K too?


Yes, that is correct.

Nare Nazaryan 1F
Posts: 101
Joined: Fri Aug 09, 2019 12:17 am

Re: Understanding Q

Postby Nare Nazaryan 1F » Sun Jan 12, 2020 10:51 pm

Yes, solving for Q is the same thing as solving for K in terms of calculations (just that the reaction might not have reached equilibrium yet).

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

Re: Understanding Q

Postby stephaniekim2K » Sun Jan 12, 2020 11:16 pm

Q is solved the same way as K, Q is just not at equilibrium.

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

Re: Understanding Q

Postby Shrayes Raman » Sun Jan 12, 2020 11:49 pm

Q is calculated the same exact way as K just it can be anytime during reaction not just during equilibrium

805097738
Posts: 180
Joined: Wed Sep 18, 2019 12:20 am

Re: Understanding Q

Postby 805097738 » Mon Jan 13, 2020 12:37 pm

To solve for Q we have to be given the values of each product and reactant, correct?


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