LAPORAN INDUSTRI PROSES Lab Report (Conductometry Titration)
Oleh: Fitri Nafisa (151424013) Nurlailatush Sholihah(151424021) Sholihah(151424021)
PROGRA STUDI DI!"TE#NI# #IIA PRODU#SI $ERSI%
JURUSAN TEN! !"!A #O$!TEN! NE%ER! &AN'UN% 201
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Introduction Titratio is the a *etho+ of +eter*ii, the -o-etratio of a u.o/ solutio
(the aalte) rea-ti, it -o*letel /ith a sta+ar+ie+ rea,et that is a solutio of .o/ -o-etratio (the titrat) o+u-to*etr titratio is oe of 6arious tes of titratio The +ifferet et/ee -o+u-to*etr titratio a+ 6olu*etri- titratio is ho/ to +eter*ie the e7ui6ale-e oit of the solutio !f usi, 6olu*etri- titratio8 the e7ui6ale-e oit is .o/ /he it -ha,es -olor /he the susta-e is i e7uiliriu* !+i-ators are use+ to *a.e it easier to see the susta-e has rea-he+ the e7ui6ale-e8 /hile e7ui6ale-e oit of -o+u-to*etr titratio -a e +eter*ie+ fro* the -o+u-ti6it of solutio that *easure+ a+ this titratio ot use i+i-ators II&
Aim' 'o -o+u-to*etr titratio • To +eter*ie e7ui6ale-e oit • To +eter*ie -o-etratios of solutio •
III&
Principe T*eory o+ Conductometry Titration ,&Conductometry o+u-ta-e (%) ease /ith /hi-h -urret flo/s er uit area of -o+u-tor er uit
otetial alie+ 9 is re-iro-al to resista-e (R) % ; 1
III&.
% ;1 = R ; > 1 = A
Conductometry Titration o+u-to*etr titratio is relate+ /ith ele-tri-al -o+u-ti6it8 so /ill e relate+
/ith the rese-e of ios i solutio /hi-h ser6es to -o+u-t ele-tri- -urret i the solutio This ele-tri- -urret -a ot e asse+ throu,h a solutio that is ot -otaie+ ios8 so that the oele-trolte solutio -a ot -o+u-t ele-tri-it o+u-to*etr titratio is also hi,hl -orrelate+ /ith the -o-etratio a+ te*erature of the solutio to e +eter*ie+ the o/er sul So that the te*erature of the solutio *ust e .et i a state of -ostat8 if the te*erature is -ha,e8 it /ill affe-t if a ,reat -o-etratio that
shoul+ ha6e a ,reat -o+u-ti6it ut it resulti, the s*aller 6ealue of the -o+u-ti6it e-ause the te*erature ,oes +o/ So that the ios i solutio -a ot stir freel Tes of -o+u-to*etr titratio +i6i+e+ ito si> tes8 the are: A-i+ ?ase or eutral titratios8 Rela-e*et or +isla-e*et titratios8 Re+o> titratios8 #re-iitatio titratios8 o*le>o*etri- titratios a+ Noa7ueous titratios The e>a*le of ti-al A-i+ ?ase or eutral titratios: •
Stro, a-is stro, ase ( @l 6s NaO@ )
•
Stro, a-i+/ea. ase ( @l 6s N@4O@ )
•
ea. a-i+Stro, ase ( @3OO@ 6s NaO@ )
•
ea. a-i+ /ea. ase ( @3OO@ 6s N@4O@ )
III&,
Principe o+ Conductometry Titration The ri-ile of -o+u-to*etr titratio is ase+ o the fa-t that +uri, the
titratio8 oe of the ios is rela-e+ the other a+ i6arial these t/o ios +iffer i the ioi- -o+u-ti6it /ith the result that -o+u-ti6it of the solutio 6aries +uri, the -ourse Too' ateria' of titratio The o+u-to*eter 0 l 081 " of Solutio e7ui6ale-e Ele-tro+e of !**ersio ell Natriu* @+ro>i+e 081 N &ea.er %lass 100 *$ @+ro-hlori- A-i+ 081 N oit *a e Sra &ottle Aseti- A-i+ 081 N lo-ate+ "a,eti- Stirrer O>ali- A-i+ &urette ,rahi-all @otlate Stirrer lotti, the -ha,e i -o+u-ta-e as a fu-tio of the 6olu*e of titrat a++e+ I!&
Too' and ateria'
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Procedure' / Critica Step'
A alirate ele-tro+e a+ -o+u-to*eter
#ress Bo
#ut i**ersio -ell ele-tro+e ito so-.et i a-. of -o+u-to*eter
Set the -ostat -ell /hi-h is aroriate /ith the ele-tro+e
Set the te*erature -oeffi-iet at a 6alue of 2
Set BFREC i 2 @38 BTE"#C i #t 100 8 BRAN%EC i fi>e+
'i the ele-tro+e i a solutio of 041 " 5$
Set#ress up equip!ent asrea+ shown in the picture .icture Bte*C otto*8 the te*erature a+ set( the 6alue 1 ) ill burette with sodiu! hydro"ide
Set otto* B5ON'C8 se-if the se-ifi- -o+u-ti6it /hi-h is aroriate to the te*erature
.ut / !iof chloride solution beaker lass Si B5ourseC otto* BoffC ositioacid a+ -ha,e the 0,1 6alueNofinto B5ell 5ostatC util B5ON'C +isla sho/ the 6alue that /e /at (li.e ste D) -ip electrode to the solution #ress BSta+ C otto* (ele-tro+e a+ -o+u-to*eter ha6e ee -alirate+)
*rite the rst the specic conductivity ( press $+N-% botto! ) before do the titration $ift ele-tro+e8 /ash a+ +r it
&itrate until it is nish' ( write the conductivity types value that shown on the device) #f the titrate have done, press $stand by% botto!, wash and dry the electrode & o+u-to*etr Titratio Make the curve between specic conductivity and volu!e of sodiu! hydro"ide titrant Specify the equivalence point and then specify the concentrations of solution Repeat step 2 until step 9 for asetic acid 0,1 N
( #i-ture 1 )
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Re'ut
A Sta+ar+iatio NaO@
"ass of O>-aliolu*e O>ali- a-i+ -o-etratio No 1 2 3 4 5 G D H 10 11 12 13 14 15 1 1G 1D 1H 20 21 22 23 24
NaO@ (*$) G G5 D D5 H H5 10 105 11 115 12 125 13 135 14 145 15 155 1 15 1G 1G5 1D 1D5
: 03 ,r : 100 *$ : 01 N (*S<-*) 400 3H3 3D4 3H 30 34H 345 33 330 31D 331 33 343 353 30 3D 3GG 3D5 3DH 3H 305 411 420 422
& 'eter*iatio -o-etratio of @l NO
olu*e NaO@ (*$)
1 2 3 4 5 G D H 10
155 1 15 1G 1G5 1D 1D5 1H 1H5 20
o+u.ti6itas (*s<-*) HG H4 H55 H33 H04 DD1 D3G GH G5H G22
11 12 13 14 15 1 1G 1D 1H 20 21 22 23 24 25 2 2G 2D 2H 30 31 32 33 34 35 3 3G 3D 3H 40
205 21 215 22 225 23 235 24 245 25 255 2 25 2G 2G5 2D 2D5 2H 2H5 30 305 31 315 32 325 33 335 34 345 35
DD1 41 5HH 305 342 34D 355 401 44D 44 4HG 533 55G 5G1 5D5 1 2G 3H 53 5 GG DD HG G0H G1G G2G G35 G4H G55 G3
'eter*iatio -o-etratio of @3OO@ 01 N No
olu*e NaO@ (*$)
1 2 3 4 5 G D H
35 4 45 5 55 5 G G5
o+u.ti6itas (*S<-*) 04 04 5G1 5 53D 52 52 51 4H4
10 11 12 13 14 15 1 1G 1D 1H 20 21 22 23 24 25 2 2G 2D 2H
D D5 H H5 10 105 11 115 12 125 13 135 14 145 15 155 1 15 1G 1G5
4D 4G 45G 443 423 403 3DG 3G 34H 335 32D 32D 333 34 34D 355 35 3G2 3D1 3D4
A %rahi- +eter*iatio -o-etratio of NaO@ 5'/ 5 6'/ 6 2'/ Konductivity (mS/cm)
2 1'/ 1 0'/ 0 3
4
10
12
15
Volume NaOH (mL)
13
14
20
& %rahi- +eter*iatio -o-etratio of @l 12 10 4
konductivity (mS/cm)
3 5 2 0 10
1/
20
2/
60
Volume NaOH (mL)
%rahi- +eter*iatio -o-etratio of @3OO@
6/
50
7 3 / 5 konductivity (mS/cm)
6 2 1 0 2
5
3
4
10
12
15
Volume NaOH (mL)
al-ulatio 'ata a 'eter*iatio -o-etratio of NaO@ N NaO@ NaO@ ;
Nasa* o.salat asa* o.salat
N NaO@ 115 *$
;
N NaO@
01G3H N
;
01 N 20 *$
'eter*iatio -o-etratio of @l N@l @l
;
N NaO@ NaO@
N@l 30 *$
;
01G3H N 22 *$
N@l
;
012G5 N
- 'eter*iatio -o-etratio of @3OO@ N@3OO@ @3OO@
;
N@3OO@ 25*$ N@3OO@
N NaO@ NaO@ ;
;
00H N
01G3H N 13 *$
13
14
20
!II&
Di''cu'ion
! this ra-ti-e of Bo+u-to*etr titratioC is a *etho+ to +eter*ie the e+ oit of titratio of a solutio ase+ o io -aailities i +eli6eri, a ele-tri-al -har,e et/ee t/o ele-tro+es (@!"ATE8 #O$&AN 2014) The ele-tro+e use+ i this e>eri*et is a i**ersio -ell ele-tro+e Ea-h *aterial is *easure+ the -o+u-ti6it to .o/ its ailit to ,eerate free ios i the *aterial roerties that are .o/ to -o+u-t ele-tri-it (@!"A8 #O$&AN 2012) &efore *easure*et 8 the tools *ust e -alirate+ first to set the -ell -ostat i a--or+a-e /ith ele-tro+es that are use+ a+ to re+u-e the error rea+i, to ,et the a--ura- result ! the -aliratio ro-ess is +oe +ii, the ele-tro+e ito the l solutio 01 "8 e-ause the l solutio 081 " has -o+u-ti6it 6alue that are .o/ i 6arious te*erature8 so the -ell -ostat -a e +eter*ie+ Fro* the result of -aliratio otaie+ -ell -ostat of 0D1 *1 a+ -o+u-ti6it of 125D *S<* i te*erature 2 -el-ius +e,ree &ut ase+ o the tale8 relatio of te*erature /ith the -o+u-ti6it te at the te*erature 20 that the 6alue is 1313 *S<* ell -ostat that alrea+ +eter*ie+ o the -alirati, areIt -ha,e+ i the e>eri*et8 e-ause the -o+u-ti6it of the solutio +ee+ o the 6alue of -ell -ostat After -alirate+8 the *easure the ele-trolte solutio /hi-h the -o*ou+ -aale of ioii, o the sol6et This e>eri*et are use+ fe/ tes of solutio su-h as O>aliA-i+ 01 N to sta+ar+ie+ the NaO@8 solutio of @l 01 N a+ @3OO@ 01 N Sta+ar+iatio of NaO@ /ith o>ali- a-i+ ai*s to .o/ the sure -o-etratio of NaO@8 e-ause thereIs a ossiilit of NaO@ ei, h,ros-oi- or eas to -at-h /ater 6aor a+ /ater if it left too lo, it *i,ht -ha,e the -o-etratio &ase+ o the e>eri*et8 otaie+ the -o-etratio of NaO@ 081G3H N This -o-etratio is +ifferet /ith the -o-etratio that /ere o the tale (01 N) After sta+ar+ie+ the solutio of NaO@8 the +o the titratio /ith NaO@ solutio as the titrat8 /hi-h the titrat /as @l solutio 01 N &efore starti, the titratio first -he-. the -o+u-ti6it te of @l a+ the result is 0D2 *S<-* ! this ro-ess8 *i> the solutio /ith *a,eti- stirrer to ,et the oti*al -o+u-ti6it te so the ios srea+ e6el
Fro*
the -o+u-to*etri- titratio of NaO@ ? @l otaie+ the -o+u-ti6it
solutio ea-h a++e+ 05 *$ NaO@8 after that *a.e a ,rahi- so the shae of the -ur6e see*s li.e the letter This shae si,if that at the first of the titratio8 the solutio -o+u-ti6it te+ to +i*iish a+ after asse+ the e7ui6alet oit8 the -o+u-ti6it te+ to i-rease This e-ause efore the NaO@ a++e+8 i the solutio -otai the @ ios a+ l that ea-h of it has their o/ 6alue of the *olar -o+u-ti6it &efore the e7ui6alet oit8 the a*out of @ i the solutio +i*iish e-ause it @2O for*e+ io O@8 /hile the a*out of NaO@ i-reases e-ause of the a++itio Na has a *olar -o+u-ti6it 6alue s*aller tha @ so the total -o+u-ti6it 6alue fro* the solutio ,oes +o/ O the e+ oit of titratio8 @ o the solutio has rea-te+ -o*letel /ith O@8 a++e+ *ore NaO@ /ill i-rease the total -o+u-ti6it 6alue of the solutio8 e-ause the *olar -o+u-ti6it of O@ are i,,er Fro* the ,rahi-8 otaie+ a e7ui6alet oit o 6olu*e 22 *$8 so it ,et the -o-etratio of @l solutio 012G5 N (it +ifferet /ith the -o-etratio that /ritte i the lael) After that8 +o the titratio o @ 3OO@ solutio 01 N8 the first -o+u-ti6it te of this solutio is 051 *S<-*8 /rite the +ate e6er 05 *$ of NaO@ a++e+ the *a.e a -ur6e to .o/ the e7ui6alet oit easil E7ui6alet oit haee+ /he the 6olu*e of NaO@ hit 13 *$8 so it -a *a.e easier to -out the -o-etratio of @3OO@ solutio8 it is 00H N (the -o-etratio is +ifferet /ith the -o-etratio that has /ritte o the lael) The +iffere-e that otaie+ fro* ea-h solutio /ith -o-etratio o the lael *i,ht ot ri,ht This haee+ e-ause /hile *a.i, the solutio the there /as so*ethi, /ro,8 resulti, the +iffere-e of the -o-etratio The result of *easure the -o+u-ti6it 6alue8 ea-h solutio has +ifferet 6alues8 o stro, ele-trolte solutio (@l) otai a i, 6alue of 8 this e-ause @l -a e ioie+ erfe-tl o the sol6et resulti, the i, 6alue o the -o+u-ti6it hile o /ea. ele-trolte solutio (@3OO@) the ioie+ isIt ,oi, erfe-tl so resulti, the -o+u-ti6it 6alue s*aller tha @$
Concu'ion 0
1 'o the -aliratio o the +e6i-e efore +oi, the titratio of -o+u-to*etr
2 o+u-ti6it 6alue of @l solutio is i,,er tha the -o+u-ti6it 6alue of @3OO@ solutio 3 o+u-ti6it 6alue of @l solutio a+ @3@OO@ solutio are 0D2 *S<-* a+ 051 *S<-* 4 "a.e the -ur6e of -o+u-ti6it te a,aist the titrat 6olu*e of NaO@ to ,et the e7ui6ale oit 5 The -o-etratio of NaO@ ase+ o the e>eri*et is 01G3H N o NaO@ 6olu*e 115 *$ -o-etratio of @l is 012G5 N o NaO@ 6olu*e 22 *$ a+ -o-etratio of @3OO@ is 00H N o NaO@ 6olu*e 13 *$
Source'
AKi8 'a6i+ ia/a tt B##T o+u.to*etriC Bhtts:<5+f htt:<
