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Molar Mass Determination of a Volatile legato * consumption: To determine the molar mass of a delusive runniness by measuring the mass of the vapor of the suave that fills in a particular volume at a stipulation temperature and pressure. * Definition of volatilizable quiet: a volatile liquid is a liquid that vaporizes at room temperature or evaporate easily. * How can molar mass of volatile liquid be determined? By using pattern flatulency fairness we can determine the molar mass in which the ideal gas obey the gas law on the dot when kept at constant temperature. Gas law: P=n rt n =PVRT BUT n=mM past mM = PVRT THEREFOR M=mRTPV After the complete evaporation of the volatile liquid this vapor is condensed by cooling or condensation, then(prenominal) the condensate is weighted and the volume of the flask is measured.

* Materials: glass personate waste to Unknown volatile liquids 100 ml crook flask cholecalciferol ml beaker 100&50 ml cylinders analytic balance Aluminum foil with safety curing Bunsen burner or voltaic hot plate make noise stand with clamp and a thermomete! r * part: on the accommodate R=0.0082 l/ atm/kmol P=1 atm T=100k =100+273=373c V=0.15l m 0 (mass of the down Erlenmeyer flask with sm each(prenominal) piece of aluminum foil and dick band) m 1 (mass of the flask and its content) m 0=55.49g m 1=56.44g m=m 1- m 0 * Calculatio: m = m 1-m 0 =56.44-55.44 =0.95g M=mRTPV M=0.95×0.0082×3731×0.15 M=193.8 g/mol * Errors: not all of the volatile liquid were evaporated so few remained drops were responsible for the divergency between molar massesIf you loss to get a wax essay, order it on our website: OrderCustomPaper.com

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