Variables


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Jarrett Peyrefitte 2K
Posts: 102
Joined: Sat Aug 24, 2019 12:16 am

Variables

Postby Jarrett Peyrefitte 2K » Mon Jan 13, 2020 10:21 am

What does each variable/letter represent in the equation PV = nRT?

Amy Pham 1D
Posts: 103
Joined: Fri Aug 09, 2019 12:15 am

Re: Variables

Postby Amy Pham 1D » Mon Jan 13, 2020 10:27 am

P=partial pressure of the gas
V=volume of container
n=mols of substance
R=ideal gas constant
T=temperature

You would use this equation in our context to convert between partial pressures and concentrations (n/V) of reactants and products to be used in calculating equilibrium constants.

sarahforman_Dis2I
Posts: 109
Joined: Sat Aug 17, 2019 12:18 am

Re: Variables

Postby sarahforman_Dis2I » Mon Jan 13, 2020 10:29 am

Jarrett Peyrefitte 2K wrote:What does each variable/letter represent in the equation PV = nRT?


P is pressure, V is volume, n is the number of moles, R is the gas constant (the values should be given to us), and T is temperature in K.

It is important to note that the units on P will determine what value of R is used (whether that be atm, bars, Pa ext). In short, make sure your units cancel!
I hope this helps

Luc Zelissen 1K
Posts: 57
Joined: Mon Jun 17, 2019 7:23 am

Re: Variables

Postby Luc Zelissen 1K » Tue Jan 14, 2020 12:39 pm

If a question gives you concentration you can still use the equation, because (n/V)= concentration, where n is number of moles and V is volume. moles/volume is molarity and that is concentration


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