Q


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105114680
Posts: 60
Joined: Fri Sep 28, 2018 12:23 am

Q

Postby 105114680 » Sun Mar 03, 2019 6:02 pm

When using Q in the Nernst Equation, how come we are allowed to mix values for partial pressure and concentration of the products and reactants?

Sophia Diaz - Dis 1B
Posts: 73
Joined: Fri Apr 06, 2018 11:02 am
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Re: Q

Postby Sophia Diaz - Dis 1B » Sun Mar 03, 2019 6:46 pm

Do you know where you found this info? Because I thought you weren't allowed to mix partial pressure and concentrations you use either/or. So if an equation is made up of completely compounds in their gas phase then you use partial pressure whereas if it is a combination of gas and other phases you use their concentrations. I don't think you are ever supposed to use both of them since partial pressures are not equivalent to concentrations, and are used to find the concentration.

Sarah Fatkin 4I
Posts: 71
Joined: Fri Sep 28, 2018 12:27 am

Re: Q

Postby Sarah Fatkin 4I » Sun Mar 03, 2019 6:52 pm

I don't think you should mix partial pressures and concentrations -- Kc is when using concentrations and Kp is when using partial pressures. Hope this helps!

eden tefera 2B
Posts: 39
Joined: Fri Sep 28, 2018 12:21 am

Re: Q

Postby eden tefera 2B » Sun Mar 03, 2019 8:58 pm

You should usually stick to using either concentration or partial pressures when calculating Q


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