Question

How do you calculate the molar volume of a gas at STP?

Answer 1

The Molar Volume of a gas at STP is a constant using Avogadro's value of 22.4 L/mol.

To calculate this we can use the Ideal gas law of `PV=nRT`

At STP (Standard Temperature and Pressure)
P = 1 atm
V = ?
n = 1 mol
R = 0.0821 `(atmL)/(molK)`
T = 273 K

`(1 atm)(V) = (1 mol) (0.0821 (atmL)/(molK))(273K)`

`V= ((1 mol) (0.0821 (atmL)/(molK))(273K))/(1 atm)`

`V= 22.4 L/mol`

I hope this was helpful.
SMARTERTEACHER