2. Gas Volumes and the Ideal Gas Law 11.3

3. Volumes of Reacting Gases Gay-Lussac’s law of combining volumes of gases – at constant T and P, the V of gaseous reactants and products can be expressed as ratio’s of small whole numbers Avogadro’s Law – V of gases at the same T and P contain = # of molecules

4. Volumes of Reacting Gases Standard Molar Volume of a Gas – the V occupied by 1 mole of a gas at STP is 22.41410L or 22.41L Ideal Gas Law – mathematical relationship among P,V, T, and the number of molecules of a gas

5. Ideal Gas Law PV=nRT R is Ideal Gas constant Value depends on the units used 0.0821 Latm8.314 LkPa molK

6. The Ideal Gas Law What is the P in atmospheres exerted by a 0.500 mol sample of Nitrogen gas in a 10.0 L container at 298 K? What P in atmospheres, is exerted by 0.325 mol of H gas in a 4.08 L container at 35°C.

7. Have a great day!