the value of equilibrium constant

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505166714
Posts: 50
Joined: Fri Sep 28, 2018 12:17 am

the value of equilibrium constant

Postby 505166714 » Mon Jan 14, 2019 7:02 pm

Is the value of the reaction quotient the same for gas when calculating it by gas concentration and when calculating it by partial pressure?

Elisa Bass 4L
Posts: 61
Joined: Fri Sep 28, 2018 12:23 am

Re: the value of equilibrium constant

Postby Elisa Bass 4L » Mon Jan 14, 2019 7:28 pm

No. Therefore, if it tells you to calculate the reaction quotient, Q, and compare it to a given K for example, make sure you use partial pressure or concentration depending on if you’re given Kp or Kc.

Sarah Kiamanesh 1D
Posts: 30
Joined: Fri Sep 28, 2018 12:22 am

Re: the value of equilibrium constant

Postby Sarah Kiamanesh 1D » Mon Jan 14, 2019 8:05 pm

It's crucial you pay attention to whether the problem specifies molecular quantities in molar concentration or partial pressures, because the constant's value is dependent on this. To convert between these two constants, use the formula:
K = (RT)^(delta nr)(Kc)

Sara Flynn 2C
Posts: 60
Joined: Fri Sep 28, 2018 12:23 am

Re: the value of equilibrium constant

Postby Sara Flynn 2C » Mon Jan 14, 2019 9:56 pm

No, the values are different because there are two different units or properties of the gases being measured in each case and so they will give different values. There is a formula to convert between the two though


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