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.
Vapor pressure of water at various temperatures is available in tables, such as Appendix B, p 1018, in your lecture text. (A vapor pressure table is ... A 325-mL sample of nitrogen is at a pressure of 500 mm Hg. The pressure is changed until the volume is …
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