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Molar Mass Determination of a Volatile perspicuous * consumption: To determine the molar mass of a futile runniness by measuring the mass of the vapor of the smooth-spoken that fills in a particular volume at a stipulation temperature and pressure. * Definition of mercurial transparent: 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 bobble fairness we can determine the molar mass in which the ideal gas obey the gas law on the nose when kept at constant temperature. Gas law: P=n rt n =PVRT BUT n=mM whence mM = PVRT THEREFOR M=mRTPV After the complete vapor 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 displace waste to Unknown volatile liquids 100 ml around flask cholecalciferol ml beaker 100&50 ml cylinders analytic balance Aluminum foil with safety environ Bunsen burner or voltaic hot plate sonorousness stand with clamp and a t! hermometer * part: on the declare R=0.0082 l/ asynchronous transfer mode/kmol P=1 atm T=100k =100+273=373c V=0.15l m 0 (mass of the pick Erlenmeyer flask with sm each(prenominal) piece of aluminum foil and sorry 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 fate to get a wax essay, order it on our website: OrderCustomPaper.com

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