Chem 1.5A: Molar Volume

am I okay?

An ideal gas consists of moving particles with...

• negligible volume

• no interparticle forces. All collisions between particles are considered elastic.

What happens to real gases as pressure increases?

• the gas occupies less space, and the particles occupy a greater proportion of the space therefore their volume is no longer negligible

• the volume decreases, the particles approach one another and attractive forces increase between particles

What happens to real gases at low temps.?

• the kinetic energy of the particles decrease

• the strength of the inter particle forces increase

What is the molar volume of a gas at STP?

22.7 dm^3/mol

What are Temperature and Pressure in STP?

T = 273 K (0 degrees C)

P = 100 kPa

What is the formula for Ideal Gas?

n=V/MV

n=moles

V = volume (in dm^3)

MV = 22.7 dm^3 / mol