Alka Lab Report PDF

Title Alka Lab Report
Author Paige Gubbe
Course Elementary Chemistry 1
Institution Indiana University Bloomington
Pages 4
File Size 73.8 KB
File Type PDF
Total Downloads 36
Total Views 140

Summary

Lab report...


Description

Pa i g eGu b b e Ma r i s s a( La bTh u r s d a y ) Ma r c h2 0 ,2 0 1 8 Wh a tI st h ePe r c e n tb yMa s so fNa HCO3i nAl k a Se l t z e rTa bl e t Th eo v e r a l lg o a l soft hi se x p e r i me n twe r et od e t e r mi n et h et o t a la mo u n to fs o d i u m b i c a r b o n a t ei nas i n gl et a b l e to fAl k a Se l t z e rb yl o o ki n ga tt h er e l a t i on s h i pb e t we e na mo u nt so f r e a c t a n ta n dp r o d u c t s . ( No r ma nSDe a n )An o t h e rg o a lwa st oo bs e r v et h er e a c t i o nwh e nc ha n g i n g t h ea mo u nt so fv i n e g a ra ndwa t e ra d d e d .Th ep r i n c i pl eo fl i mi t i n gr e a c t a nt si sn e c e s s a r yi no r d e r t or e a c hc o r r e c tr e s u l t si nt h i sl a bb e c a u s ei ti swh a tl i mi t st h ea mo u n toft h epr o d uc tt h a tc a nb e f o r me d.( Ac a de mi cCo mmo n s )I n c r e a s i n ga mo u n t sofv i n e g a rwa sa dd e dt ot h ewa t e rs o l u t i o nt o d e t e r mi n et h ea mo u n to fv i n e g a rt h a ti sn e c e s s a r yt oc o mp l e t e l yr e a c twi t ha l lo ft heNa HCO3 . ( Ge n e r a lCh e mi s t r y )Th ec h a n g ei np r o p o r t i o nb e t we e n wa t e ra n dv i n e g a ra l l o wso n et o d e t e r mi n eh o wmu c hv i n e g a ri sn e c e s s a r y . I no r d e rt or e a c ht h eo v e r a l lg o a l so ft h i se x p e r i me n t ,ap r oc e d u r ewa sn e c e s s a r y .Fi r s t ,3 5 mLo fwa t e rwa sa d de dt oafla s ka n dt h ema s swa st a k e no ft h ewa t e ri nt h efla s k .Th e nt h ema s s o fe a c hAl k a Se l t z e rt a b l e twa sme a s u r e da n dr e c or d e d .Ei g h tc u p swe r en umb e r e da n dfil l e d wi t ht hed i ffe r e n ts o l u t i o nso fwa t e ra n dv i n e g a r .I n c r e a s i n ga mo u nt so fv i n e g a rwa sa d d e d b e c a u s ei ta l l o wso n et od e t e r mi n et h ea mo u n to fv i n e g a rn e e d e dt oc omp l e t e l yr e a c twi t ha l lo f t h eNa HCO3i ne a c ht a b l e t .Ne x t ,t h ema s so fe a c hc u pwa sme a s u r e da n dr e c o r d e d .Th e no n e t a bl e twa sp l a c e di ne a c hc u pu n t i li td i s s o l v e dc omp l e t e l y .Th ema s swa st h e nt a k e no fe a c hc u p a f t e rt h et a bl e twa sd i s s o l v e d .Ne x t ,t hel o s so fma s so fCO2a n d% b yma s si nt a b l e twa s c a l c u l a t e d .

Ast hea mo u n to fv i n e g a ri nt h es o l u t i o ni nc r e a s e d ,t hep e r c e n tb yma s so fNa HCO3i n e a c ht a b l e ti n c r e a s e da swe l l .Ho we v e r ,t h ea c c u r a c ya ndp r e c i s i o no fmyd e t e r mi n a t i o no f p e r c e n tb yma s so fNa HCO3v a r i e ds l i g h t l yt h r o u g h o utt r i a l s .Fo re x a mp l e ,t r i a lon eh a da p e r c e n tb yma s so f4 3. 8 3 %.Wh e nmo r ev i n e g a rwa sa dd e di nt r i a lt wo ,t h ep e r c e n tb yma s swa s t h e n3 4 . 1 6 %.Th ea c c u r a c yo fmyr e s u l t swe r es l i g ht l yo ffb e c a u s ei nt r i a lt h r e e ,t h ep e r c e ntb y ma s sj u mp e db a c ku pt o5 3 . 6 2 %.Ov e r a l l ,t h ep e r c e n tb yma s sd i di n c r e a s e ,h o we v e rt he r ewe r e s o mee r r o r s .Th eu n c e r t a i n t i e si nt h ed a t aa nds o ur c e so fe r r o rc o u l dc o mef r o m ma n yd i ffe r e n t t h i n g s .Ib e l i e v et h a tt h ema i ns o u r c eo fe r r o rt h a tc a u s e dmyp e r c e nt a g e st ob eo ffi si n a c c u r a t e me a s u r i n go ft h ea mo u n t so fwa t e ra n dv i n e g a ri ne a c hs o l u t i o n. Th i swo u l dc a us et hep e r c e n t a g e b yma s so fNa HCO3t ob eo ff. Th epr i n c i p l eo fl i mi t i n gr e a c t a n t sp l a y e dal a r g er ol ei nt hi sl a bbe c a u s et h el i mi t i n g r e a c t a n ts wi t c h e df r o m vi n e g a rt oNa HCO3 . Wh e nv i ne g a rwa st h el i mi t i n gr e a c t a n t ,t h eg r a p ho f % ma s swa si n c r e a s i n g .Ho we v e r ,whe nt heg r a p hl e v e l e do ut ,a l lo ft h eNa HCO3h a sb e e n r e a c t e d .Al lo ft heNa HCO3i nt h et a b l e ti sg o n ea ndt ha ti swh yNa HCO3i st h en e wl i mi t i n g r e a c t a n t .Th ep e r c e n t a g eo fNa HCO3f o u ndi nAl k a Se l t z e rt a b l e t si sv e r ys i mi l a rt ot h epe r c e n t s wi t ho t h e ra c i d n e ut r a l i z i n gme di c i ne s .Th i si sb e c a u s es o d i u mb i c a r bo n a t ei swh a tc r e a t e st h e c a r b o nd i o x i d eg a so rt h e“ fiz z ” .Ho we v e r ,Tu msi sno tq u i t ea sfiz z ya sAl ka Se l t z e r ,t h e r e f o r e t h e r ei sal o we rp e r c e n t a g eo fs o d i um b i c a r b o na t ei nT ums .Th ec l a i mst h a tAl ka Se l t z e rma k e s r e g a r d i n gt h ef a c tt h a tt he i rp r o d u c tp r o v i d e smo r ec o mp l e t er e l i e ft h a nc o mp e t i n gb r a n d sc a nno t b ef u l l ya s s e s s e db a s e do nt h ed a t af r o mt h i sl a b .Th ep e r c e n t a g eofNa HCO3b yma s si ne a c h t a bl e td o e sn o tg i v ee n o u ghd a t at od e t e r mi neho w muc hr e l i e fe a c ht a bl e tp r o v i de s .Al loft he o t h e ri n gr e di e nt si ne a c ht a b l e ta r en e e de di no r d e rt od e t e r mi n et h ea mo u nto fc o mp l e t er e l i e f .

Citations Norman S. Dean A.; Jill Robinson B. Chemistry 103 Laboratory Manual, Fifth Edition; HaydenMcNeil: Macmillan Learning, 2017

Xiao. (1970, January 1) Academic Commons. Low-dimensional Material: Structure-property Relationship and Applications in Energy and Environmental Engineering.

Alka-Seltzer Fizzing-Determination of Percent by Mass of NaHCO3 in Alka-Seltzer Tablets. An Undergraduate General Chemistry Experiment. ACS Publications....


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