Combined Gas Law
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 49
- Joined: Fri Sep 29, 2023 10:17 am
Combined Gas Law
Can someone please briefly explain the combine gas law? How do we know when to use it?
-
- Posts: 88
- Joined: Fri Sep 29, 2023 12:24 pm
Re: Combined Gas Law
combined gas law is when we use PV = nRT to find a missing variable by setting two set of the same gaseous substances under different conditions equal to each other. Here are some example formulas:
P1V1/(n1*T1) = P2V2/(n2*T2)
P1V1 = P2V2
In the context of chem14b, I can see us having to use it for solving for work done for irreversible or reversible reactions. For example, you could use P1V1 = P2V2 if you're given the change in pressure and an initial volume for an irreversible reaction, to solve for the change in volume.
P1V1/(n1*T1) = P2V2/(n2*T2)
P1V1 = P2V2
In the context of chem14b, I can see us having to use it for solving for work done for irreversible or reversible reactions. For example, you could use P1V1 = P2V2 if you're given the change in pressure and an initial volume for an irreversible reaction, to solve for the change in volume.
-
- Posts: 42
- Joined: Mon Jan 03, 2022 9:11 am
Re: Combined Gas Law
Basically it describes how the pressure, volume, and temperature are related. The ratio between the products is a constant.
The formula is PV/T=k (where k is the constant)
or
P1V1/T1 = P2V2/T2 (to see how one property affects the others)
If you do the derivation from the three Law’s it can be useful to help understand
The formula is PV/T=k (where k is the constant)
or
P1V1/T1 = P2V2/T2 (to see how one property affects the others)
If you do the derivation from the three Law’s it can be useful to help understand
Who is online
Users browsing this forum: No registered users and 5 guests