Referat - The Ideal Gas Equation ...RMATINET INCLUDEPICTURE httpine1.sb.fsu.educhm1045notesGasesIdealGasIMG000 06.GIF t MERGEFORMATINET INCLUDEPICTURE httpine1.sb.fsu.educhm1045notesGasesIdealGasIMG000 07.GIF t MERGEFORMATINET INCLUDEPICTURE httpine1.sb.fsu.educhm1045notesGasesIdealGasIMG000 08.GIF t MERGEFORMATINET Therefore, R can include energy units such as Joules or calories Values for the gas constant RUnitsValueL atmmol K0.08206calmol K1.987Jmol K8.314m3 Pamol K8.314L torrmol K62.36Example If e had 1.0 mol of gas at 1.0 atm of pressure at 0C 273.15 K, hat ould be the volumePV nRTV nRTPV 1.0 mol0.0821 L atmmol K273 K1.0 atmV 22.41 L0 C and 1 atm pressure are referred to as the standard temperature and pressure STP The molar volume of an ideal gas any ideal gas is 22.4 liters at STPExample Nitrate salts NO3- hen heated can produce nitrites NO2- plus oxygen O2. A sample of potassium nitrate is heated and the O2 gas produced is collected in a 750 ml flask. The pressure of the gas in the flask is 2.8 atmospheres and the temperature is recorded to be 53.6 C.Ho many moles of O2 gas ere produced PV nRTn PVRTn 2.8 atm 0.75 L 0.0821 L atmmol K 53.6 273Kn 2.1 atm L 26.81 L atmmoln 0.078 mol O2 ere produced Relationship Beteen the Ideal-Gas Equation and the Gas Las Boyles la, Charless la and Avogadros la represent special cases of the ideal gas laIf the quantity of gas and the temperature are held constant then PV nRTPV constantP constant 1VP INCLUDEPICTURE httpine1.sb.fsu.educhm1045notesGasesIdealGasprop.g if t MERGEFORMATINET 1V Boyles laIf the quantity of gas and the pressure are held constant then PV nRTV nRP TV constant TV INCLUDEPICTURE httpine1.sb.fsu.educhm1045notesGasesIdealGasprop.g if t MERGEFORMATINET T Charless laIf the temperature and pressure are held constant then PV nRTV n RTPV constant nV INCLUDEPICTURE httpine1.sb.fsu.educhm1045notesGasesIdealGasprop.g if t MERGEFORMATINET n Avogadros laA very common situation is that P, V and T are changing for a fixed quantity of gas PV nRTPVT nR constantUnder this situation, PVT is a constant, thus e can compare the system before and after the changes in P, V andor T INCLUDEPICTURE httpine1.sb.fsu.educhm1045notesGasesIdealGasIMG000 09.GIF t MERGEFORMATINET Example A 1 liter sample of air at room temperature 25 C and pressure 1 atm is compressed to a volume of 3.3 mls at a pressure of 1000 atm. hat is the temperature of the air sample INCLUDEPICTURE httpine1.sb.fsu.educhm1045notesGasesIdealGasIMG000 10.GIF t MERGEFORMATINET !B01iA69YZI6CJOJaQJas56CJOJaQJats56CJOJaQJatsaj!CJ OJaQJaUajCJOJaQJaUajCJOJaQJaUajCJOJaQJaUCJOJaQJa5CJ OJaQJata37Y1KiaIfaFdditFdditFdditaaa-.0127AIKghijop uvaaaaaaaaaaaaaaaaaaaaaaCJHOJaQJaCJOJaQJaaJ5CJOJaQJ at6CJOJaQJas56CJOJaQJatsajOCJOJaQJaUajCCJOJaQJaUaj3 CJOJaQJaUCJOJaQJaajCJOJaQJaUaj0CJOJaQJaU4ijpv4aIfaa If0a063a4aaabavTIDIILIPaIfaIfuIf0l0a063a4aaabCMJsyt ttthtyyFadditaaauIf0l0a063a4aaabaIfaEFGmnosEvxyitsa n89LijajdCJOJaQJaUajbCJOJaQJaUajsCJOJaQJaUajtCJOJa QJaUajCJOJaQJaU5CJOJaQJatCJHOJaQJaCJHOJaQJaCJOJaQJa 56CJOJaQJats56CJOJaQJats4sEpNIFdditFdditFddithahaaN iiiaiąiaFdditaaFdditaaajSzCJOJaQJaUCJOJaQJaajCJOJaQ JaUajlCJOJaQJaU 1h ą!... Download |