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关于英文版化学实验报告范本
关于英文版化学实验报告
Recordthesituationandlessonslearned,findouttheexistingproblemsandformfuturecountermeasures.
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关于英文版化学实验报告
说明:
本报告资料适用于记录基本情况、过程中取得的经验教训、发现存在的问题以及形成今后的应对措施。
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篇一:
英文版化学实验报告
Title:
PreparationofFescrapfromwaste
(NH4)2SO4.FeSO4.6H2O
Thepurposeoftheexperiment
Learnthemethodusedscrapironpreparationofferrousammoniumsulfate.
Familiarwiththewaterbath,filtered,andevaporatedunderreducedpressureandcrystallizationbasicworking.
Theexperimentalprinciple,theironandsulfuricacidtogeneratereactiveferroussulfate,ferroussulfateandammoniumsulfateinanaqueoussolutionofequalmolarinteraction,becomeslesssolublebluegenerateferrousammoniumsulfate.
Fe+H2SO4=FeSO4+H2(gas)
FeSO4+(NH4)2SO4+6H2O=(NH4)2SO4.FeSO4.6H2OUsuallyferrousrocksareeasilyoxidizedinair,butaftertheformationofrelativelystableperfunctory,nottobeoxidized.
Experimenttouseinstruments,scales,constanttemperaturewaterbath,pumps,basins,cups,10mlgraduatedcylinder,asbestosmesh,glass,tripod,alcohollamp,funnel.
Ironpiecestoasolidpharmaceuticaluse,useofacidammoniumsulfateand3mol/lofsulfuricacid,concentratedsulfuricacid.
Theexperimentwasdividedintofoursteps.
ThefirststepSaidironpowder4gintoabeakerandthen50ml10ml,3mol/LH2SO4wasaddedtothesamebeaker.Thesecondstepwillbethebeakerisheatedtonomorebubbles,andthenfilteredhotandthefiltratewasthenfilledin100mlbeaker.Thethirdstep,called4g(NH4)2SO4,andtheresulting
ammoniumsulfateand5.3mlofwatertoformasaturatedsolution,andthenaddittotheferroussulfatesolution,adjustedwithconcentratedsulfuricacidtoPH=1.Afourthstep,thethirdstepthesolutionwasheatedinawaterbathtothesurfaceuntilthefilmiscrystallized,itwasslowlycooledand
thenfilteredunderreducedpressuretostandfinallydried,weighedandtheyieldwascalculated.Theresultsobtained8.1gbluishpowdery
crystals.Havethisresultwecancalculateyield,startingwiththefirststepwetriedtoknowtheamountofiron,shouldthiswecancalculatethetheoreticalsulfateferroussulfateis0.03mol,thenferroussulfateobtainedbythe
0.03molFeSO4theoreticalvalueofammonium.FeSO4+(NH4)2SO4+6H2O=FeSO4.(NH4)2SO4.6H2O0.03molXmol
X=0.03mol
m=XM=0.03molⅹ392g/mol=11.76g
Yield=theactualvalueoftheformulaisdividedbythetheoreticalvalueby100%.itwillbecalculatedintothedataobtainedinayieldof68.9%.
篇二:
英文版化学实验报告
Thepreparationofalkalitypecoppercarbonate
Thefirst:
theexperimentpurpose
1.Masterthemethodsofalkalitypecoppercarbonatepreparedandprinciple
2.Throughthedesignexperimenttocultivateindependentdesignabilityandchemicalresearchthinking
Thesecond:
theexperimentalprinciple
ThesolubilityofCu(OH)2andCuCO3aresimilar,WithCu2(OH)2CO3solidprecipitationinthesolution.
2CuSO4+2Na2CO3+H2O==Cu2(OH)2CO3↓+2Na2SO4+CO2↑
Thethird:
theexperimentalsteps
1.Solutionpreparation
Disposes0.5moleofeachlitreacidsourcoppersandsodiumcarbonatesolutioneach100milliliters.
2.Thefeedingorderandrawmaterialcomparetheexploration
Accordingto2:
1.6,2:
2,2:
2.4,2:
2.8allocatedproportion,isacceptedafterpassinganexaminationthesurfacedispositionacidsourcopperandthesodiumcarbonatesolution,joinsinseparately8testtubes,joinsrapidlythesulfuricacidcoppersolutionsinthesodiumcarbonatesolution,vibratesaboutotherconstanttemperaturetenminutesasfor75degreesCelsiuswaterbathsin,theinversionfeedingorderrecreatesonetime,theobservationhastheprecipitationspeed,quantityhowmanyandthecolor,
discoverstheoptimumcondition.
3.Temperatureexploration
Accordingtotheaboveoptimumcondition,takestheacidsourcoppersolutionsandthesodiumcarbonatesolutionseparatelyunder50,75and100degreesCelsiusrespondedthat,discoverstheoptimumtemperature.
4.Accordingto2,3stepexplorationoptimumconditionpreparesthefinalproduct,andwiththedistilledwaterlavation,finallydriesandcallsheavily.(Enlargestentimeswithconicalflasktodo)
Thefourth:
theexperimentalitems
Instrumentandmaterial:
Thebalance,thebeaker,theglassrod,theVolumetricflask,thetesttube,thefilterflask,theBuchnerfunnel,theErlenmeyerflask
Chemicals:
Coppercarbonate,sodiumsulfate
Thefifth:
theexperimentalresult
1.Bythestep2,theobservationphenomenonoptimumconditionisequaltoforthecupricsulfatecomparedtothesodiumcarbonate2:
2.4,thefeedingorderforjoinsthesulfuricacidcoppersolutionstothesodiumcarbonatesolutionin.
2.Bythestep3,theobservationphenomenonoptimumtemperatureis75degreesCelsius
3.Accordingtothecoppersulfatesolutionthansodiumcarbonate
solutionis2:
2.4,tentimesmagnification,alkalitypecoppercarbonatewaszeropointfivegrams,accordingtothereactionequationcalculationyield.
2CuSO4+2Na2CO3+H2O==Cu2(OH)2CO3↓+2Na2SO4+CO2↑
21
0.5*0.02X
2/(0.5*0.02)=1/X
X=0.005
M[Cu2(OH)2CO3]=0.005*222=1.11g
Productiverate:
0.5/1.11*100%=45%
Thesixth:
Questions
1.Whichcupricsaltsuitthesystemtotakethecupricbasiccarbonate?
Answer:
Cu(NO)3orCuSO4
2.Thereactiontemperaturehaswhatinfluencetothisexperiment?
.
Answer:
Thetemperatureexcessivelyislow,theresponsespeedisslow;Thehyperpyrexia,theCu2(OH)2CO3decompositionisCuO.
3.ReactioniscarriedoutatwhattemperaturewillappearBrownproduct?
Whatisthebrownsubstance?
Answer:
Thetemperatureisequalto100degreesCelsiusandthisbrownmaterialisCuO.
篇三:
化学专业英语实验报告
Inthephysiologicalsalinethesodiumchloridecontentdetermination
one,theexperimentalgoal
1、thestudysilvernitratestandardsolutionconfigurationandthedemarcationmethod
2、thegraspinglawraisesSiFatodeterminethechlorideionthemethodprincipletwo,theexperimentalprinciple
WithAgNO3standardsolutiontitrationCl-Ag++Cl-==AgCl,Atph7.0-10.5availablefluorescentyellowdoindicator(HFIn)
HFIn==FIn(yellow)+H+
Spbefore:
excessive,AgClprecipitationadsorptionofCl-AgClCl-+FIn-(yellow-green)
AfterSp:
Ag+,excessiveAgClprecipitationAg+adsorption,adsorptionFIn-reprecipitationAgCl,Ag++FIn-==AgCl,Ag+,FIn-(pink)Thefinishcolorchanges:
fromyellowishgreentoorangeThree,instrumentsandreagents
Equipmentandmaterials:
Acidtypeburet(150ml),taperbottle(250ml),volumetricflask(100ml),pipette(20ml,10ml),measuringcylinder(100ml,10ml),beaker(100ml),brownreagentbottles(500ml),analyticalbalance,platformscale.Thereagentanddrug:
AnalysisofAgNO3(s,pure),NaCl(s,
analysisofpure),physiologicalsaline,fluorescentyellow-starch.Fourth,theexperimentalsteps
Accuratelymoving25mlconcentrationis0.7064mol╱Lofsilvernitratestandardsolutioninthemiddleof250mlvolumetricflask,dilutetoscaleasastandardsolutiontitration.
Accuratelymovingsaline10.00mlto250mlconicalflask,add50mlwater,3dropsoffluorescentyellowindicator,5%starchindicator5ml,undercontinuousagitation,usingsilvernitrate
standardsolutiontitrationtosolutionfromyellowtopinkistheendpoint.Recordtheconsumptionvolumeofsilvernitrate
standardsolution,paralleldeterminationof3,calculatethesodiumchloridecontentinsalineandrelativemeandeviation.
Fifth,datarecordingandprocessing
Formula:
ρ=V×MrNaCl×CAgNO3x100
Theaveragedeviationd=0.01300dr=d/ρ×100%=0.13%
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