lab report

1. Ptepaefi:rexpet’Inent5′nthenormaluay. CompIetearflsubm’nyourPte-Ld>¢:iz
aleast3oni1mesbefaeyweunetntheId>.Bdngyourfbwd1atIofl1eId>to
subrIiatmestztd&Iesessiu1a1dIeadtheexpedmansomayoumdasuId
vdhatyouarereqiedtodo.

2. Con1)letelI’neptac§calpatoflI’IeId>asdesaibedin1I1emaI’Iual-

3. AnEncelspreadsmetIetIplaehasbeenptwidedbass’stincakn:la‘msaIdui
beauailablemBIacIboad.Usefl1istneormIeteyuldaaH)h5.yaphsaId
cakalaions.

4. Ywuineedtosbmitfl1espteadsheetbeIuefl1eeIdoffi1eId>sss’msofl1at
yourgqndaaaldresflscalbernarked

5. IIP(RTAflT:Keepacopyoffl1espreadsheetsohayouIBvefl1einixma‘m
IeqiedtocompIetelI’Iecak:1laioI1sedionoflI’IelJ>Repott. Youaredaleto
access your subnited spreadshea via Blackboard (Cl-Ellllm. My Grads)
Anema‘vely.savethespteadsheettoaUSBore-rnailitnyourself.

6.Makenouainyournwudmaywmayreierbad:mM1enwrmle6rIgmeuiIm
Idnepon.

7. HandinyourResultssheetstoyutml:IasnorInd. Enswelhatyoultavealthe
itlfolmaiontltayoureqtiretoeolllphtzthelahflepott

Eflngem
8.111ereponvIiIlfowsonPartCofEJq)eri1Ient5-Deternilahrafsodiln
percabaBieomcentafimbypernangaIateaIdy5is.Readmenwthgaiutia
beforeyoubeghvwiiIgsofl1ayouaeanzehowfl1emartsforIIeLabRepottae
docad.

9. Foread1sediminfl1erepuLfi1inkbadtmIwuywpradieedfl1eIelahedsedim
vfiIiIyutPre-LabQuizesfa(24EM11(X)flissenn5ar.ForexarnpIe.fathe
lnlo¢xxim.reIerbadnbmeH’e4abq:izM1emywfl1wgflabwtmepuposed
theexperinuentaldhowyouwouldgodnntlaatinvesaigaion.

10.Usemepa§tensepassivemieeHnncuwle6ngmeEmainendSecfion.Use

11.TakecaIeM1enuasaiingyutnsuItsaaossfiunmemslsse¢iu1.Ramnba
tnirxfiudeqaptuptineuritsandwotkilg

12.Rereadyourwutfu’sdenfl5caIdgatm1aficalenus.ohedhauhayouhave
vnimenmahasense.

13.Yulreponuibesubnithedfl1rwQ1TumiiIhBlaekboad.wheIemereponis
assssedfororiginality. YouuiInotseeIIatoriginaIityReportmtiyoureoeiveIIe
feedbadtandrlwtfromtheleport.

PROCEDURE
A:lleasw’IgCharacte¢isticAbsotp6onSpeci’a
1.!-”IIacuveItewihdistiIedwaer.Placeiti1the
spectruneter.makirIgsuefl1athedear.non-fmstedsideis
facingtheightpaIh.oollectareietenceor’blaflt”
-7-. spectnun. The dasotbanoe of the water wi be subtraded
73″!-’°39″’9″“5′:::fls E autnmaicaiyfromlaeneacfngs.

Espaueaimouu.-ea § 2. hasepaatewve1T1:e.a:Iectruy1ly3fIl:f’~4be2x1Q;:
eoIIpanIInntlIaydanage ‘ KJLhO4sclutnorL prectseconcentranon pn
itheslledlollllofiotmhf. I ontheld3eLPlaoe1hisi1thespe<1rometerarIdmeasure
L-J the absorbance spectnm Record this spectrun in you
resultssheet.De!enIi1ethevtave!eng1hvheI’ed:sorbance
isatamaxirlum
B: Dehnlfisatiotuoftllestoicllioutnetlyofleaclion.

1. From1I1eaLtxnaticdispenser.measuIe25Irtvolumesof
1MH2Soa(aq)inbead1often 1OIrtplasticFdcon”‘
tubes.La:eleadIoffl1eubeswiIhthenunIbess1fl1t’ouy
11010.

2. hbeachtubeadd25Irtofpatassiumpenna19anate
scution

3. Nonptepa’eaccuatelyasduionofsociLtnpemarbonahe
(Na,CO,-1-5!-l,0,)bg’veasoulionarourId4mMi1l-1,0,
Usean analytical balawceand volumetric glasswate. Using
cisIiIedwaer.ciuethesolution‘nfl1eIlaskLpbthemark.
shopperaudnixwelbyhverfngflweflaskaleastifltinles
‘l’hisisyoustndtsolutiorL

4. Dimeyourstod:solu1ionusinga1iI5diuiontomakea
toIalvouneof25nI.111isisthesolmioI1youwilIusefor
thenextslaep.

5. Totheplasticfilconttbesadd Iespeaive!yo.D.5. 1.1.5.
2.25.3.3.5.4and4.5IrtofyourciIutehyIio9enpemadde
sch:tiorLUsingadistiIledwaerbcl1le.adddistiedvaIIerto
ead1tubeuptothe1oIrtmadt.Ioixthesolmions
thorotyaly.

6. UseacolotinetercorI1ectedtoaVemierLa:Qaestto
measuretheabsorbaneeofeadasolutionatflweavaiable
wavelength dosesttothernaximumthayou detemiwed
earlier.Usethetnnanuwkeysbselectthiswave!eng1I1.
Beforetak’nganyreaci19s.youwilneedtoblaritthe
cclorirnemerbyplacirlgacuvedtefiledvaihwaerinthe
cclorirneoer.dosingthelida1dpressiIgthe‘CAL’buIbn
mtitheredLEDigflbeg’1stoflasha1dthenreleasingi.
Thecolotineterisruawreadyformeasuringthedasorbarxoe
vahesofyoursolmion.

Experimental Procedure . . I

1. To deternI’nethestoichionIetIyofthet’eoctiorIbetweenHzOgaId

MnO4‘ by measuring the of several solutions of varying V”
ooncentrofionofl-lgO;audconst¢rIt[MlO4‘]at52OunusiIgaUV-Vns .__r

2. To detennine the concentration of hyckogm peroxide in a Iandry powdr using

grqahicnlmethod

C: DeoemilulionofSodilnpe¢cxbonaeconcettrationbyPemu1galute
Andysis
Steps11-12dmldbepafamedhMp£aale(3idaI6calmdyaespabnneda’deby
aide).
Rananber-so¢iumpacarbauoeisaskiIirribnt-wearahbwaluycoagsafety
yassesanddisposablegloves!
Weighana:u:ahetyi1mabeaka’asnaIarn1ndbIead1pouda’(O.3-O.4)arK!
reootdtheweigfl.
Add1MstluicaddsduimumiIhefizirIgoeases(atund3nt)1TIisisneededto
nemraisethebaseptesem.
l)ih:heIffisacauaIelyuo1oonLinawlumIelricflaskwi1hdsfiIedwaet.
Malxeaseomd<flI16mbyacarahelydilulivg1nLdyu1rfirstsoh16<xm:25nL
PIepaIeIhtee1orrtplasIictubesuih2.5nI.1Msdfuricacidand2.5trtpot3ssi:n
pem1a1gaatesduimasbeRxe.Toead1ubeadd1nLdytxtdIuedblea$Ipoudet
solu6m.MakeLpblhe1Ontnwkwi1h<isIiedwaeta1dnixflu’uJyiy.
Measurelheflnsotbanoevaluesasbeiote.
Usirlglhezverageabsubauoevduefmmytxtuialicdeamdgsesdetemfimez
TPenmberdnnlesdhy¢oga1peouddeinsoh16mmatIeaded.5ingteequaim
fmmyxxtpreviousplot.
Cal¢alaelhecaucenu’aionofhydu9enpemuddei1youunsolufions.
Cdalaememnterdnnlesdhydogenpeozddehmeacfiveoxygenhuudrypouder.
WoIkoutIhe%byrIassafNa¢Oos-1.5H2O2intheIaurK!rypouder.

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