Avogadro’s Law:
V n Avogadro’s Law Equal volumes of gases contain equal numbers of molecules (moles) at constant temp & pressure true for any gas
Volume of Gas at STP:
At 1 atm and 273 K the volume of 1 mol o f gas is 22.4 L Volume of Gas at STP According to Avogadro’s law, 1 mole of any gas will occupy the same volume as one mole of any other gas at the same temperature and pressure
Volume of Gas at STP:
Volume of Gas at STP
Volume of Gas at STP:
Volume of Gas at STP
Combined Gas Law to Ideal Gas Law:
Combined Gas Law to Ideal Gas Law Merge the Combined Gas Law with Avogadro’s Principle : Do derivation on board
Ideal Gas Law:
Ideal Gas Law P= pressure V =volume n = number of moles R=universal gas constant T=temperature in Kelvins UNIVERSAL GAS CONSTANT R=0.0821 L atm / molK R=8.314 L kPa / mol K PV= nRT
Ideal Gas Law Problems:
GIVEN: P = ? atm n = 0.412 mol T = 16°C = 289 K V = 3.25 L R = 0.0821 L atm/molK WORK: PV = nRT P(3.25)=(0.412)(0.0821)(289) L mol L atm/molK K P = 3.01 atm Ideal Gas Law Problems Calculate the pressure in atmospheres of 0.412 mol of He at 16°C & occupying 3.25 L.
Ideal Gas Law Problems:
Ideal Gas Law Problems What pressure is exerted by 0.450 mol of gas at 25 C if the gas is in a 0.650 L container?