INTRODUCTION TO ANALYTICAL CHEMISTRY QUESTIONS AND CORRECT ANSWERS

INTRODUCTION TO ANALYTICAL
CHEMISTRY QUESTIONS AND CORRECT
ANSWERS
AnalyticalA2chemistryA2seeksA2to:A2-A2Ans--measureA2theA2compositionA2ofA2materials

>>answers:A2what,A2where,A2howA2muchA2&A2inA2whatA2arrangement/structureA2orA2form

AnalyticalA2chemistryA2-A2Ans--
*theA2studyA2ofA2theA2separation,A2identification,A2andA2quantificationA2ofA2theA2chemicalA2
componentsA2ofA2naturalA2andA2artificialA2materials.*

QualitativeA2AnalysisA2-
A2Ans--"revealsA2identityA2ofA2elementsA2andA2compoundsA2inA2aA2sample.A2"


QuantitativeA2AnalysisA2-A2Ans--
tellsA2usA2howA2muchA2thereA2isA2;A2ProvidesA2usA2withA2numericalA2infoA2(ex.A2howA2much
A2ofA2eachA2substanceA2isA2inA2aA2sample.)


AnalytesA2-A2Ans--componentsA2ofA2aA2sampleA2thatA2areA2toA2beA2determined.

*Quantitative-*(4)A2generalA2areasA2ofA2analysis:A2-A2Ans--
*(1)A2GravimetricA2methods*A2determineA2massA2ofA2analyteA2
*(2)A2VolumetricA2method*A2useA2theA2volumeA2ofA2aA2solutionA2containingA2sufficientA2rea
gentA2toA2reactA2withA2theA2analyte.A2
*(3)ElectrochemicalA2methods*A2measureA2electricalA2propertiesA2(potential,A2current,A2re
sistance)A2toA2findA2compositionA2ofA2samples.A2
*(4)A2SpectroscopicA2methods*A2basedA2onA2interactionA2ofA2electromagneticA2radiationA2
withA2analyteA2atomsA2&A2molecules,A2orA2onA2theA2productionA2ofA2radiationA2byA2analyte
s.A2
*others:*

GreenA2analyticalA2chemistryA2-A2Ans--
theA2designA2ofA2chemicalA2productsA2andA2processesA2thatA2reduceA2orA2eliminateA2theA2
generationA2ofA2hazardousA2substances

StepsA2ofA2analyticalA2chemistryA2analysisA2-A2Ans--(1)A2DefineA2theA2problem
(2)A2SelectA2aA2method
(3)A2ObtainA2aA2representativeA2sample
(4)A2PrepareA2theA2sampleA2forA2analysis
(5)A2PerformA2chemicalA2seperations
(6)A2PerformA2theA2measurement
(7)A2CalculateA2theA2resultsA2andA2report