## PV=nRT

Ryan Troutman 4L
Posts: 68
Joined: Fri Sep 28, 2018 12:22 am

### PV=nRT

I understand that n/v is equal to concentration, but what exactly do we use the ideal gas law for in chemical equilibrium? Also, if we have to find P, will we be given R and T?

Ruiting Jia 4D
Posts: 65
Joined: Fri Sep 28, 2018 12:27 am

### Re: PV=nRT

Hi Ryan,
I think we use PV=nRT to support Le Chatelier's principle, but there isn't much else on where you'd use it in class. However, we may have to use the concentration to calculate P, such as in P = (conc) * RT given temperature. R is a constant.

Lasya Gudipudi 1A
Posts: 60
Joined: Fri Sep 28, 2018 12:15 am

### Re: PV=nRT

R is always a constant, so it will always be given. I think we may use the ideal gas law to convert from Kc to Kp or to find concentration when given pressure.

Aleeque Marselian 1A
Posts: 60
Joined: Fri Sep 28, 2018 12:24 am

### Re: PV=nRT

We use the ideal gas law to convert between partial pressure and molar concentration. R is a constant, therefore it will always be give and T will most probably be given in order to find either P or n/v.

Niveda_B_3I
Posts: 60
Joined: Fri Sep 28, 2018 12:24 am

### Re: PV=nRT

PV = nRT shows the relationship between pressure and concentration so it would be used to convert Kp to Kc and vice versa.

Posts: 64
Joined: Fri Sep 28, 2018 12:26 am

### Re: PV=nRT

For most problems R and T are constants and will be given in the problem. This formula is generally used to find pressure or concentration.

Carlos De La Torre 2L
Posts: 60
Joined: Tue Oct 09, 2018 12:16 am

### Re: PV=nRT

The ideal gas law is used in order to convert from molarity to partial pressure, with K and R being given

vaishali 1D
Posts: 61
Joined: Fri Sep 28, 2018 12:19 am

### Re: PV=nRT

If you need to solve a PV=nRT equation, temperature will almost always be given. Also, R is a constant on our sheet, you just need to figure out which R works in the situation (whether or not the problem is asking in bar or atm).

jocelyntzeng
Posts: 59
Joined: Fri Sep 28, 2018 12:18 am

### Re: PV=nRT

ideal gas law can also be used to find one part of the equation to put into another equation or sometimes to directly substitute into an equation