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Introduction to Volumetric Analysis

Introduction to Volumetric Semester IVDr. :burettes,micro-burettes,volumetricpipet tes,graduatedpipettes, Principles&TypesIntroduction Chemicalanalysisplaysanimportantroleinst udyofcompositionorconstituentsofsubstanc esormaterial. Thechemicalanalysisisbroadlydividedintot wotypes Qualitativeanalysis Quantitativeanalysis Thevolumetricmethodinvolvesmeasurementof volumesofthereactingsubstances. Theweightoftherequiredconstituentsisindi rectlyobtainedbymeasuringthevolumeofasol utionofknowncompositionrequiredtoreactwi thaknownvolumeofasolutioncontaininganunk nownweightofthedesiredconstituent. reductionmethods Thequantitativeanalysisisfurtherclassifi edintotwobranchesnamely Volumetricanalysis GravimetricanalysisVolumetric Analysis Volumetricanalysisisalsoknownastitrimetr icanalysis. Thereagent(thetitrant)isaddedgraduallyor stepwisetotheanalytefromaburette. Thekeytoperformingasuccessfultitrimetric analysisistorecognizetheequivalencepoint ofthetitration(thepointatwhichthequantit iesofthetworeactingspeciesareequivalent) ,typicallyobservedasacolourchange.

A mole : The molecular weight expressed in grams of any substance is called as mole or gram molecule of the substance. For expamle, sodium chloride has molecular weight 58.5g of sodium chloride means one mole of it. b. Millimole : The mole is very large unit, hence a smaller unit which is one thousandth of it, known as millimole is used. Thus 1 ...

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