Solution Manual for Quantitative Chemical Analysis 10th Edition by Harris

All 28 Chapters Covered
r r r




SOLUTION MANUAL
r

,Contents

Chapterr0r
ChapterrIr 3

Chapterr 2




38
53

Chapterr 7


Chapterr 9 82

Chapterr 10 97

Chapterr 11 126

Chapterr 12 Advancedr Topicsr inr Equilibrium 142

Chapterr 13 175

Chapterr 14 189

Chapterr 15 202

Chapterr 16 Electroanalyticalr Techniques
Chapterr 17
238

Chapterr 19 251
260

Chapterr 21
Chapterr 22 GasrChromatography 284

Chapterr 23 298
311

Chapterr 25 327
345


360

, CHAPTERr0
THErANALYTICALrPROCESS


0-1.
Qualitativeranalysisrfindsroutrwhatrisrinrarsample.r Quantitativeranalysisrmeasur
esrhowrmuchrisrinrarsample.

0-2. Stepsrinrarchemicalr analysis:
(1) Formulatertherquestion:r Convertrargeneralrquestionrintorarspecificronerthatrcan
r beransweredrbyrarchemicalrmeasurement.
(2) Selectrtherappropriateranalyticalrprocedure.
(3) Obtainrarrepresentativersample.
(4) Samplerpreparation:rConvertrtherrepresentativersamplerintorarsamplersuitablerfo
rranalysis.r Ifrnecessary,rconcentratertheranalyterandrremoverorrmaskrinterferingr
species.
(5) Analysis:r Measurertherunknownr concentrationr inr replicateranalyses.
(6) Producerarclearrreportrofrresults,r includingrestimatesrofruncertainty.
(7) Drawrconclusions:r Basedronrtheranalyticalrresults,rdeciderwhatractionsrtortak
e.

0-3. Maskingrconvertsranr interferingrspeciesr torarnoninterferingrspecies.

0-4.
Arcalibrationrcurvershowsrtherresponserofranranalyticalr methodrasrarfunctionro
frtherknownrconcentrationrofranalyterinrstandardrsolutions.r Oncerthercalibrationrcu
rverisrknown,rthenrtherconcentrationrofranrunknownrcanrberdeducedrfromrarmeasur
edrresponse.

0-5.
(a)r Arhomogeneousrmaterialrhasrthersamercompositionreverywhere.r In
arheterogeneousrmaterial,rthercompositionrisrnotrthersamereverywhere.
r



(b)r Inrarsegregatedrheterogeneousrmaterial,rthercompositionrvariesronrarlargerscale.r T
herercouldrberlargerparchesrwithronercompositionrandrlargerpatchesrwithranotherr
composition.r Therdifferencesrarersegregatedrintordifferentrregions.r Inrarrandomr
heterogeneousrmaterial,rtherdifferencesroccurronrarfinerscale.r lfrwercollectrar"reas
onable-
size"rportion,rwerwillrcapturereachrofrtherdifferentrcompositionsrthatrarerpresent.
(e)r Torsamplerarsegregatedheterogeneousrmaterial,rwertakerrepresentativeramount
srfromreachrofrtherobviouslyrdifferentrregions.r InrpanelrbrinrBoxr0-
I,r66%rofrtherarearhasrcompositionrA,r 14%risrB,randr20%risrC.r Torconstructra

, 2 Chapterr0


representativerbulkrsample,r wercouldrtaker66rrandomlyrselectedrsamplesrfromr
regionrA,r14rfromrregionrB,randr20rfromrregionrC.r Torsamplerarrandomrhetero
geneousrmaterial,rwerdividerthermaterialrintorimaginaryrsegmentsrandrcollectrr
andomrsegmentsr withrtherhelprofrartablerofrrandomrnumbers.

0-6. Werarerapparentlyrobservingrinterferencerbyr Mn?rinr ther Iranalysisrbyrmethod
A.r TherresultrofrtherIranalysisrisraffectedrbyrtherpresencerofrMn2.r Thergreaterrtherc
oncentrationrofrMn?rinrthermineralrwater,rthergreaterrisrtherapparentrconcentratio
nrofrIrfoundrbyrmethodrA.r MethodrBr isrnotrsubjectrtorthersamerinterference,rsorther
concentrationrofrIrisrlowrandrindependentrofradditionrofrMn2t.r Therermustrbersom
erMn?'rinrtheroriginalrmineralrwater,rwhichrcausesrmethodrArtorgiverarhigherrresul
trthanrmethodrBrevenrwhenrnorMn?'risrdeliberatelyradded.