Question

At STP, what is the volume of 1.0 mole of carbon dioxide?

Answer 1

Answer : The volume of carbon dioxide at STP is 22.4 L

Explanation : Given,

Moles of carbon dioxide = 1.0 mole

STP : It stands for standard temperature and pressure.

The pressure is 1 atm and temperature is 273 K.

As we know that at STP, 1 mole of substance always contains 22.4 L volume of substance.

That means,

1.0 mole of carbon dioxide contains 22.4 L volume of carbon dioxide

Hence, the volume of carbon dioxide at STP is 22.4 L

Answer 2

Using ideal gas equation,

PV=nRT

Where P=pressure(atm), V=volume(L), n=number of moles of the gas, R=gas constant, 0.0821 atm L/moles K, T=temperature(K)

At STP:

P=1 atm

T=273K

n=1 as given

So using ideal gas equation,

V=nRT/P

So,

V=1*0.0821*273/1

=22.4 L