Total Pressure

[Garmani Kyaw]

There was a question on total pressure in midterm 1. I remember that the one and only reactant was solid, and did we have to expect that there was no partial zero for that reactant?

If you remember, how did you solve this problem?

[Marylyn Makar 1B]

Hi! So when you solve for chemical equilibrium problems, you do not include solids or liquids. Therefore, you would ignore the reactant that was a solid for that question. To find the total pressure, you would just have to add up the partial pressures of the products once you solve for them. I do not remember the rest of that problem but if you go to a TA's office hours they can explain it to you :)

[Immi Lee - 1D]

I agree with the post above. I did not necessarily have that question, but that is generally how you approach these types of problems.

[Riddhi Mehta 2C]

Hi! So when you solve for chemical equilibrium problems, you do not include solids or liquids. Therefore, you would ignore the reactant that was a solid for that question. To find the total pressure, you would just have to add up the partial pressures of the products once you solve for them. I do not remember the rest of that problem but if you go to a TA's office hours they can explain it to you :)

I understand this train of thought, but how would you solve for partial pressures with a K value and not a Kp value?

[Kylie Joe 2A]

Solids are not included in the Kp measurement or the regular K value, so I think you can go about it in the same manner as you would given Kp

[AlbertGu_2C]

I recall in the question, the gases were on both sides, so it made it easier to solve for the answer using the Kp equation.

[David Y]

Solids and liquids would not count for this. This would apply for gases for Kp.