Transcription of Tutorial 6 GASES - EIU
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Tutorial 6 GASES - EIU
T-41 Tutorial 6 GASESB efore working with GASES some definitions are needed:PRESSURE: atmospheres or mm Hg; 1 atm = 760 mm HgTEMPERATURE: Kelvin, K, which is oC + 273 STP: Standard Temperature and Pressure: 273 K and 1 atm (or 760 mm Hg)BOYLE'S LAW (temperature is constant): PV = constantThis is an inverse relationship: if one variable increases the other ' LAW (pressure is constant): V = constant x T This is a direct relationship: if one variable increases so does the 'S LAW (volume is constant): P = constant x TThis is a direct relationship: if one variable increases so does the GAS LAW: PV = nRT, whereP = pressure of the gas sampleV = volume of the gas sampleT = Kelvin temperature of the gas samplen = moles of the gas sampleR = molar gas constantAVOGADRO'S LAW: At the same temperature and pressure, equal volumes of allgases have the same number of molecules. At STP one mole of any gas occupies avolume of L: this is the molar CHANGES: These are problems which involve only changes in the variables of Pressure,Volume, and Temperature.
T-41 Tutorial 6 GASES Before working with gases some definitions are needed: PRESSURE: atmospheres or mm Hg; 1 atm = 760 mm Hg TEMPERATURE: Kelvin, K, which is oC + 273 STP: Standard Temperature and Pressure: 273 K and 1 atm (or 760 mm Hg)
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