ANALYTICAL CHEMISTRY CHAPTER 1
QUESTIONS AND CORRECT ANSWERS
WhatA2isA2analyticalA2chemistry?A2-A2Ans--TheA2chemicalA2characterizationA2ofA2matter
DistinguishA2betweenA2qualitativeA2analysisA2andA2quantitativeA2analysis.A2-A2Ans--
QualitativeA2AnalysisA2-A2identifyingA2theA2presenceA2ofA2aA2particularA2substance
QuantitativeA2AnalysisA2-A2determiningA2howA2muchA2isA2present
OutlineA2theA2stepsA2commonlyA2employedA2inA2anA2analyticalA2procedure.A2BrieflyA2desc
ribeA2eachA2step.A2-A2Ans---A2DefineA2theA2problem
-A2ObtainA2aA2representativeA2sample
-A2DryA2theA2sampleA2(ifA2required)
-A2MeasureA2it'sA2weightA2orA2volume
-A2DissolveA2theA2sampleA2andA2prepareA2aA2solutionA2----
>A2forA2theA2measurementA2stepA2
-A2MeasureA2theA2analyte
-A2CalculateA2theA2amount/concentrationA2ofA2theA2analyteA2inA2sample
-A2computeA2theA2precisionA2ofA2analysis
WhatA2isA2toA2analyze?A2-A2Ans--StudyA2closely;A2breakA2downA2intoA2keyA2parts
WhatA2isA2determination?A2-A2Ans--TheA2processA2ofA2measuringA2theA2analyte
WhatA2isA2aA2sample?A2-A2Ans--representsA2theA2materialA2toA2beA2analyzed
WhatA2isA2anA2analyte?A2-A2Ans--substanceA2toA2beA2measuredA2orA2determined
WhatA2isA2aA2blank?A2-A2Ans---A2consistsA2ofA2allA2chemicalsA2usedA2inA2analysis
-A2runA2throughA2theA2analyticalA2procedure
-A2usedA2toA2determineA2impuritiesA2thatA2mightA2beA2addedA2toA2theA2analyticalA2result
-A2mustA2beA2subtractedA2fromA2results
ListA2someA2ofA2theA2commonA2measuringA2techniquesA2employedA2inA2analyticalA2chemi
stryA2-A2Ans---A2gravimetry
-A2volumetricA2analysis
-A2instrumentalA2analysis
-A2kineticA2methodsA2ofA2analysis
-A2combinationsA2ofA2theA2four
ListA2someA2separationA2proceduresA2employedA2inA2analyticalA2chemistryA2-A2Ans---
A2precipitationA2--->A2gravimetry
-A2chromatography
QUESTIONS AND CORRECT ANSWERS
WhatA2isA2analyticalA2chemistry?A2-A2Ans--TheA2chemicalA2characterizationA2ofA2matter
DistinguishA2betweenA2qualitativeA2analysisA2andA2quantitativeA2analysis.A2-A2Ans--
QualitativeA2AnalysisA2-A2identifyingA2theA2presenceA2ofA2aA2particularA2substance
QuantitativeA2AnalysisA2-A2determiningA2howA2muchA2isA2present
OutlineA2theA2stepsA2commonlyA2employedA2inA2anA2analyticalA2procedure.A2BrieflyA2desc
ribeA2eachA2step.A2-A2Ans---A2DefineA2theA2problem
-A2ObtainA2aA2representativeA2sample
-A2DryA2theA2sampleA2(ifA2required)
-A2MeasureA2it'sA2weightA2orA2volume
-A2DissolveA2theA2sampleA2andA2prepareA2aA2solutionA2----
>A2forA2theA2measurementA2stepA2
-A2MeasureA2theA2analyte
-A2CalculateA2theA2amount/concentrationA2ofA2theA2analyteA2inA2sample
-A2computeA2theA2precisionA2ofA2analysis
WhatA2isA2toA2analyze?A2-A2Ans--StudyA2closely;A2breakA2downA2intoA2keyA2parts
WhatA2isA2determination?A2-A2Ans--TheA2processA2ofA2measuringA2theA2analyte
WhatA2isA2aA2sample?A2-A2Ans--representsA2theA2materialA2toA2beA2analyzed
WhatA2isA2anA2analyte?A2-A2Ans--substanceA2toA2beA2measuredA2orA2determined
WhatA2isA2aA2blank?A2-A2Ans---A2consistsA2ofA2allA2chemicalsA2usedA2inA2analysis
-A2runA2throughA2theA2analyticalA2procedure
-A2usedA2toA2determineA2impuritiesA2thatA2mightA2beA2addedA2toA2theA2analyticalA2result
-A2mustA2beA2subtractedA2fromA2results
ListA2someA2ofA2theA2commonA2measuringA2techniquesA2employedA2inA2analyticalA2chemi
stryA2-A2Ans---A2gravimetry
-A2volumetricA2analysis
-A2instrumentalA2analysis
-A2kineticA2methodsA2ofA2analysis
-A2combinationsA2ofA2theA2four
ListA2someA2separationA2proceduresA2employedA2inA2analyticalA2chemistryA2-A2Ans---
A2precipitationA2--->A2gravimetry
-A2chromatography