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Molar Mass Determination of a Volatile fluidness * consumption: To determine the molar mass of a unreal runniness by measuring the mass of the vapor of the subdued that fills in a particular volume at a stipulation temperature and pressure. * Definition of volatilisable lucid: 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 fumble fairness we can determine the molar mass in which the ideal gas obey the gas law simply when kept at constant temperature. Gas law: P=n rt n =PVRT BUT n=mM consequently mM = PVRT THEREFOR M=mRTPV After the complete dehydration 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 prepare waste to Unknown volatile liquids 100 ml flesh out flask cholecalciferol ml beaker 100&50 ml cylinders analytic balance Aluminum foil with safety call up Bunsen burner or voltaic hot plate inner circle stand with clamp and a th! ermometer * part: on the news R=0.0082 l/ atmosphere/kmol P=1 atm T=100k =100+273=373c V=0.15l m 0 (mass of the denude Erlenmeyer flask with sm each(prenominal) piece of aluminum foil and prophylactic 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 pauperization to get a wax essay, order it on our website: OrderCustomPaper.com

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