9Avogadro’s LawFor a gas at constant temperature and pressure, the volume is directly proportional to the number of moles of gas.
10a = proportionality constant V = volume of the gas Avogadro’s LawV n (P and T = constant )V = ana = proportionality constantV = volume of the gasn = number of moles of gas
11Ideal Gas Law An equation of state for a gas. “state” is the condition of the gas at a given time.PV = nRT
12Ideal Gas Law PV = nRT R = proportionality constant = L atm molP = pressure in atmV = volume in litersn = molesT = temperature in Kelvins
13PV = nRTVariables on the same side of the equation are inversely proportionalVariables on opposite sides of the equation are directly proportional
14Standard Temperature and Pressure “STP”P = 1 atmosphereT = C = 273KThe molar volume of an ideal gas is liters at STP
15A balloon inflated in an air- conditioned room at 27oC, has a volume of 4 L. It is heated to a temperature of 57oC. What is the new volume of the balloon if the pressure remains constant
16The gas left in an used aerosol can is at a pressure of 1 atm at 27oC The gas left in an used aerosol can is at a pressure of 1 atm at 27oC. If this can is thrown unto a fire, what is the internal pressure of the gas when its temperature reaches 927oC
17A container with an initial volume of 1 L is occupied by a gas at a pressure of 1.5 atm at 25oC. By changing the volume, the pressure of the gas increases to 6 atm as the temperature is raised to 100oC. What is the new volume?
18A gas occupies a volume of 180 mL at 35. 0oC and 740 mm Hg A gas occupies a volume of 180 mL at 35.0oC and 740 mm Hg. What is the volume of the gas at conditions of STP?