LAPORAN TETAP PRAKTIKUM KIMIA ANALISIS DASAR
TITRASI PENGENDAPAN/ARGENTOMETRI
Disusun Oleh : Kelompok III : 1. 2.
3. %. $. ". &. ,.
NURUN NISA
SARI RISKI HASIBUAN SHINTYA FEBRIZA TRY YU'IARTI )ANDHITO RIZNA I. YUNI KHAIRUNNISA . SYAHRA*I YUNIA FRANSISKA
NIM. 061530400335 061530400335 NIM. 061530400336 061530400336
NI. !"#$3!%!!33& NI. !"#$3!%!!33( NI. !"#$3!%!!3%! NI. !"#$3!%!!3%# NI. !"#$%!%!+##& NI. !"#$3!%!!
KE'AS : # KB INSTRUKTUR : I-. H. So/0h1 .T.
LABORATORIUM TEKNIK KIMIA POLITEKNIK POLITE KNIK NEGERI SRIWIJAY SRIWIJAYA
TAHUN AJARAN 2015/2016 TITRASI PENGENDAPAN/ARGENTOMETRI PENGENDAPAN/ARGENTOMETRI (PENENTUAN KLORIDA)
1. TUJUAN PERCOBAAN 0h0sis20 m0mpu mel0kuk0n s0n40-4is0si 40n penenu0n p040 i-0si pen5en40p0n 4en50n men55un0k0n meo4e oh2. RINCIAN KERJA #. S0n40-4is0si S0n40-4is0si l0-u0n A5NO +. 6enenu0n 6enenu0n k040- klo-i40 p040 7uplik0n . DASAR TEORI Ti-0si pen5en40p0n pen5en40p0n me-up0k0n me-up0k0n i-0si 80n5 4i40s0-k0n 4i40s0-k0n p040 -e0ksi -e0ksi pem9enuk0n
en40p0n 0n0-0 0n0li 4en50n i-0n. Te-40p0 i50
m070m i-0si pen5en40p0n 80n5 4i9e40k0n 40-i in4i70o- 80n5 4i5un0k0n : #.
eo40 oh-
+.
eo40 )olh0-4
3.
eo40 A4so-9si 6040 i-0si 80n5 meli90k0n 50-0m50-0m pe-0k1 040 i50 m070m
in4i70o- 80n5 4ipe-5un0k0n 4ipe-5un0k0n meo40 meo40 oh- men55un0k0n men55un0k0n ion k-om0 k-om0 ;-O%+ 1 unuk men5en40pk0n A5;-O% 9e-20-n0 7okl0. eo40 )olh0-4 men55un0k0n ion Fe3< unuk mem9enuk kompleks 9e-20-n0 4en50n ion ioksi0n0 S;N . Den50n meo40 =00ns men55un0k0n >in4i70o04so-9s?. Sepe-i su0u s8sem 0s0m 90s0 40p0 4i5un0k0n se9050i su0u in4i70o- unuk i-0si 0s0m 90s01 m0k0 pem9enuk0n en40p0n 40p0 u50 4i5un0k0n se9050i peunuk 0khi- su0u i-0si p040 meo40 moh-1 80iu penenu0n klo-i40 4en50n ion pe-0k 4en50n in4i70o- ion k-om01 k-om01
pen0mpil0n pe-0m0 80n5 e0p 40-i en40p0n pe-0k k-om0 80n5 9e-20-n0 keme-0hme-0h0n 4i0n550p se9050i su0u iik 0khi- i-0si. e-up0k0n h0l 80n5 4iin5ink0n 90h20 pen5en40p0n in4i70o- 4ek0 p040 iik eki@0len. 6e-0k k-om0 le9ih l0-u seki0- ,1% #!$ molClie- 40-i p040 pe-0k klo-i40 # #!$ molClie-. ik0 ion pe-0k 4i0m90hk0n kep040 se9u0h l0-u0n 80n5 men50n4un5 ion klo-i40 40l0m konsen-0si 80n5 9es0- 40n ion k-om0 40l0m konsen-0si 80n5 ke7il1 m0k0 pe-0k klo-i40 0k0n e-le9ih 40hulu men5en40p mem9enuk en40p0n 9e-20-n0 puih1 pe-0k k-om0 90-u 0k0n e-9enuk sesu40h konsen-0si ion pe-0k menin5k0 s0mp0i mel0mp0ui h0-50 K kel pe-0k k-om0. eo40 oh- 40p0 u50 4i5un0k0n unuk penenu0n ion 9iomi40 4en50n pe-0k ni-0. Sel0in iu u50 40p0 menenuk0n ion sl0ni40 40l0m l0-u0n 80n5 se4iki 0lk0lis.
A!"#$%&'#%! Isil0h 0-5enome-i 4iu-unk0n 40-i 90h0s0 l0in 0-5enum1 80n5 9e-0-i pe-0k. 04i 0-5enome-i me-up0k0n s0l0h s0u 70-0 unuk menenuk0n k040- 0 40l0m su0u l0-u0n 80n5 4il0kuk0n 4en50n i-0si 9e-40s0-
pem9enuk0n
en40p0n
4en50n
ion
A5<.
6040
i-0si
0-5enome-i1 0 peme-iks00n 80n5 el0h 4i9u9uhi in4ik0o- 4i70mpu4en50n l0-u0n s0n40- 50-0m pe-0k ni-0 A5NO3. Den50n men5uku@olume l0-u0n s0n40- 80n5 4i5un0k0n sehin550 selu-uh ion A5< 40p0 ep0 4ien40pk0n1 k040- 50-0m 40l0m l0-u0n peme-iks00n 40p0 4ienuk0n.
C! M&*! 6040 meo4e ini1 i-0si h0li4e 4en50n A5NO3 4il0kuk0n 4en50n K +;-O%. 6040 i-0si ini 0k0n e-9enuk en40p0n 90-u 80n5 9e-20-n0. 6040 iik 0khi- i-0si1 ion A5< 80n5 9e-le9ih 4ien40pk0n se9050i A5+;-O% 80n5 9e-20-n0 me-0h 900. '0-u0n h0-us 9e-si=0 ne-0l 00u se4iki 90s01 e0pi i40k 9oleh e-l0lu 90s0 se909 A5 0k0n 4ien40pk0n se9050i
A5OH+. ik0 l0-u0n e-l0lu 0s0m m0k0 iik 0khi- i-0si i40k e-lih0 se909 konsen-0si ;-O% 9e-ku-0n5. 6040 kon4isi 80n5 7o7ok1 meo4e moh- 7ukup 0ku-0 40n 40p0 4i5un0k0n p040 konsen-0si klo-i40 80n5 -en40h. 6040 enis i-0si ini1 en40p0n in4ik0o- 9e-20-n0 h0-us le9ih l0-u 4i90n4in5 en40p0n u0m0 80n5 e-9enuk sel0m0 i-0si. In4ik0o- e-se9u 9i0s0n80 4i5un0k0n p040 i-0si sul=0 4en50n B0;l+1 4en50n iik 0khi- 0khi- e-9enukn80 en40p0n 50-0m B0 80n5 9e-20-n0 me-0h.
C! +&,*! Ti-0si A5 4en50n NH%S;N 4en50n 50-0m FeIII se9050i in4ik0o040l0h 7onoh meo4e @olh0-41 80iu pem9enuk0n 0 9e-20-n0 4i40l0m l0-u0n. Sel0m0 i-0si1 A5S;N e-9enuk se40n5k0n iik 0khi- e-70p0i 9il0 NH%S;N 80n5 9e-le9ih 9e-e0ksi 4en50n FeIII mem9enuk 20-n0 me-0h 5el0p GFeS;N+<. 6040 meo4e @olh0-41 unuk menenuk0n ion klo-i40 su0s0n0 h0-usl0h 0s0m k0-en0 p040 su0s0n0 90s0 Fe3< 0k0n e-hi4-olisis. A5NO3 9e-le9ih 80n5 4i0m90hk0n ke l0-u0n klo-i40 enun80 i40k 9e-e0ksi. '0-u0n A5< e-se9u kemu4i0n 4ii-0si 90lik 4en50n men55un0k0n FeIII se9050i in4ik0o-.
C! $ D0l0m i-0si =00ns 4i5un0k0n in4ik0o- 04so-psi. In4ik0o- 04so-psi i0l0h 0 80n5 40p0 4ise-0p p040 pe-muk00n en40p0n 40n men8e909k0n im9uln80 20-n0. 6en8e-0p0n ini 40p0 4i0u- 050- e-04i p040 iik ekui@0len1 0n0-0 l0in 4en50n memilih m070m in4ik0o- 80n5 4ip0k0i 40n pH. In4ik0o- ini i0l0h 0s0m lem0h 00u 90s0 lem0h o-50ni7 80n5 40p0 mem9enuk en40p0n
4en50n ion
pe-0k. is0ln80 ou-esein
80n5
4i5un0k0n 40l0m i-0si ion klo-i40. D0l0m l0-u0n1 ou-esein 0k0n men5ion. Flou-esein 40l0m l0-u0n 9e-20-n0 hi0u kunin51 sehin550 iik 0khi- 40l0m i-0si ini 4ike0hui 9e-40s0-k0n i50 m070m pe-u90h0n1 80iu
en40p0n 80n5 semul0 puih men04i me-0h mu40 40n en40p0n e-lih0 men55ump0l1 l0-u0n 80n5 semul0 ke-uh men04i le9ih e-nih1 40n l0-u0n 80n5 semul0 kunin5 hi0u h0mpi- i40k 9e-20-n0 l05i.
.
ALAT YANG DIGUNKAN Ne-070 An0liis K070 A-loi E-lenme8e- +$! ml Bu-e $! ml 6ipe uku- +$ ml Jel0s kimi0 #!! ml1 +$! ml '09u 0k0- #!! ml1 +$! ml Sp0ul0 Bol0 k0-e
• • • • • • • • •
5.
GAMBAR ALAT (T#!,'!)
6.
BAHAN YANG DIGUNAKAN • • • •
A5NO3 In4i70o- K +;-O% N0;l p.0 ;uplik0n 80n5 men50n4un5 ;l
3.
PROSEDUR PERCOBAAN
3.1
S%$-!- L!4%$ B4 A"NO enim90n5 %1+$ 5-0m pe-0k ni-0 40n men0m90hk0n 0i- 0u04es
•
s0mp0i +$! ml 40l0m l09u 0k0-. Di050 0n50n s0mp0i e-ken0 •
sin0- m00h0-i enim90n5 4en50n elii i50 7uplik0n n0-ium klo-i40 80n5 mu-ni
•
40n ke-in5 se9e-0 !1+! 5-0m 40l0m i50 E-lenme8e- +$! ml el0-uk0n i0p 7onoh 40l0m $! ml 0i- 0u04es 40n
•
men0m90hk0n + ml !1# k0lium k-om0. eni-0si 7uplik0n 4en50n l0-u0n pe-0k ni-0 s0mp0i e-04i pe-u90h0n 20-n0 men04i keme-0hme-0h0n 80n5 s09il.
3.2 •
P#$#$%4$ K,&!- enm90n5 4en50n elii 7uplik0n se9e-0 # 5-0m1 mel0-uk0n ke
•
40l0m 0i- s0mp0i #!! ml. en50m9il +$ ml 0liko mem0sukk0n ke 40l0m E-loenme8e-
• •
9e-uku-0n +$! ml. en0m90hk0n i50 ees in4i70o- k0lium k-om0. eni-0sik0n 4en50n l0-u0n 90ku pe-0k ni-0 s0mp0i e-04i pe-u90h0n 20-n0 men04i keme-0hme-0h0n 80n5 s09il.
. DATA PENGAMATAN .1 S%$-! L!4%$ B4/S%$-! A"NO N &.
G!' $,% (NC,)
+&,4'# %%!$ (A"NO)
P#!47*$ 8!$
1.
200 '"
',
K4$$" '#!*$
#'#!*9
2.
200 '"
:1 ',
K4$$" '#!*$
#'#!*9
.
200 '"
:; ',
K4$$" '#!*$
#'#!*9
+&,4'# !%9!% < ',
.2 P#$#$%4$ C, 9 -#$"$ A"NO N &.
+&,4'# $,%
+&,4'# %%!$ (A"NO)
1.
25 ',
23 ',
P#!47*$ 8!$ K4$$"
#'#!*9
'#!*$ 2.
25 ',
25 ',
.
25 ',
26 ',
K4$$" '#!*$
K4$$" #'#!*9 '#!*$
+&,4'# !%9!% < 26 ',
;. PERHITUNGAN ;.1 S%$-! L!4%$ A"NO M#$#$%4$ $&!',% A"NO gr NaCl =¿ ) A5NO3 BE NaCl
0,2 gr 58,442 gr / mol
L
!1!3% '
N A5NO3
N A5NO3
0,2 gr
N A5NO3
L
N A5NO3
L
1,987028
!1# N
N Teo-i
N
L
gr AgNO 3 BE AgNO 3 X V AgNO 3
4,25 gr N
L
N
L
170
gr x 0,25 L mol
!1# N
#'#!*9
N Teori − N Praktik Kesalahan = x 100 N Teori
L
0,1−0,1 0,1
L
x 100
!M
;.2 P#$#$%4$ K,&!- -#$"$ A"NO M#$#$%4$ = ,&!- -,' >&$%&* M ;l L
V AgNO 3 x N AgNO 3 x BE Cl gr sampel
#!!M
0,26 L x 0,1 N x 35,5 gr / mol
L
1 gram
#!!M
M ;l L (1+3 M
10. PERTANYAAN #. Ap0 80n5 4im0ksu4 4en50n 0-5enome-i 0209 : A-5enome-i 040l0h su0u 70-0 unuk menenuk0n k040- 0 40l0m su0u
l0-u0n 80n5 4il0kuk0n 4enn50n i-0si 9e-40s0-k0n pem9enuk0n en40p0n ion A5< 00u meo4e i-0si 80n5 men55un0k0n l0-u0n pe-0k ni-0 se9050i i-0n.
+. 6040 i-0si 80n5 el0h An40 l0kuk0n 4i 00s1 ulisk0n 0p0 80n5 9e-in40k se9050i: • • • •
S0n40- 6-imeS0n40- Sekun4eAn0li In4i70o-
0209 : • • • •
S0n40- 6-ime-: N0-ium Klo-i40 N0;l S0n40- Sekun4e-: A5NO3 6e-0k Ni-0 An0li: B0;l+ In4i70o-: K +;-O% K0lium K-om0
3. Tulisk0n i-0si pen5en40p0n 80n5 9uk0n 0-5enome-i 0209 : H0sil pen5en40p0n 80n5 9uk0n 0-5enome-i 040l0h p-esipiime-i1 k0-en0 p-esipiime-i i40k h0n80 melipui pem9enuk0n 4en50n A5< e0pi 4en50n lo50mlo50m 80n5 l0in.
11. ANALISA PERCOBAAN S0n40-is0si '0-u0n B0kuCS0n40- A5NO3 6040 pe-7o900n ini pe-0m0 4il0kuk0n 4en50n mem9u0 l0-u0n pe-0k ni-0 se90n80k %1+$ 5- 40l0m +$! ml 0u04es 80n5 4i5un0k0n se9050i i-0n. Kemu4i0n1 menim90n5 7uplik0n N0;l se90n80 !1+ 540l0m m0sin5m0sin5 i50 e-lenme8e- +$! ml. Seel0h iu 4il0-uk0n 4en50n $! ml 0u04es m0sin5m0sin5 ke40l0m e-lenme8e- 80n5 9e-isi 7uplik0n N0;l. '0lu i-0si 4en50n A5NO3 80n5 se9elumn80 el0h 4i0m90hk0n + ml !1# k0lium k-om0 ke40l0m 7uplik0n se9050i in4ik0o-1 7uplik0n 4i i-0si s0mp0i e-9enuk en40p0n puih 40n 20-n0n80 9e-u90h men04i kunin5 9enin5. '0m0kel0m00n l0-u0n 80n5 4ii-0si 0k0n 9e-u90h 20-n0 men04i keme-0hme-0h0n. )olume -00-00 80n5 4i40p0k0n 40-i 3 k0li pe-7o900n 040l0h 3% ml. 6enenu0n ;l 4en50n A5NO3 6e-0m0 4il0kuk0n 4en50n menim90n5 elii 7uplik0n B0;l+ se9e-0 # 5-0m unuk 4il0-uk0n ke 40l0m 0i- s0mp0i #!! ml. Kemu4i0n men50m9il 0liko 40n mem0sukk0n ke 40l0m e-lenme8e- 9e-uku-0n +$! ml1 m0sin5 m0sin5 40l0m i50 e-lenme8e-. Seel0h iu1 men0m90hk0n m0sin5 m0sin5 i50 ees in4ik0o- k0lium k-om0. Ti-0si l0-u0n 4en50n A5NO31 20-n0 l0-u0n 0k0n 9e-u90h 20-n0 men04i kunin5 9enin5 kemu4i0n 9e-u90h 20-n0 men04i me-0hkeme-0h0n. )olume -00-00 80n5 4i40p0k0n 40-i 3 k0li pe-7o900n 040l0h +" ml.
12. KESIMPULAN D0-i pe-7o900n ini1 40p0 4isimpulk0n 90h20 : 1. Ti-0si pen5en40p0n 040l0h i-0si 80n5 4i40s0-k0n p040 -ek0si pem9enuk0n en40p0n 0n0-0 0n0li 40n i-0n. +. Te-40p0 3 m070m i-0si pen5en40p0n 80n5 4i9e40k0n 40-i in4i70o- 80iu : #. eo4e oh-1 men55un0k0n ion k-om0 ;-O%+ +. eo4e )olh0-41 men55un0k0n ion Fe3< 3. eo4e F00ns1 m-n55un0k0n in4ik0o- A4so-9si. 3. D0-i pe-7o900n 80n5 el0h 4il0kuk0n1 m0k0 4i40p0k0n 400 : N A5NO3
:
K040- ;l 40l0m B0;l+ : %.
!1# N (1+3 M
Keik0 4i i-0si 90ik p040 s0n40-is0si l0-u0n 90kuCs0n40- A5NO3
m0upun penenu0n ;l l0-u0n 0k0n 9e-u90h 20-n0 40-i kunin5 9enin5 men04i keme-0h me-0h0n.
GAMBAR PROSES TITRASI PENGENDAPAN
S%$-! L!4%$ B4/S%$-! A"NO
enim90n5 %1+$ 5-0m pe-0k ni-0 4i0m90hk0n 4en50n
A5NO3 80n5 el0h 0u04es
N0;l < K +;-O% se9elum i-0si 4en50n l0-u0n pe-0k
6-oses i-0si N0; l ni-0
N0;l seel0h i-0si
P#$#$%4$ K,&!-
enim90n5 7uplik0n B0;l+ se9e-0 # 5-0m se9elum i-0si
B0;l+ < K +;-O%
6-oses i-0si B0; l+ 4en50n l0-u0n pe-0k i-0si ni-0
B0;l+ seel0h
GAMBAR ALAT
Neraca Analitis
Kaca Arloji
Erlenmeyer
Bu-e B00n5 6en504uk
Jel0s Kimi0
6ipe Uku-
'09u T0k0;o-on5 pis0h
Bol0 K0-e Sp0ul0
6ipe ees
DAFTAR PUSTAKA
o9shee >+!#$? Kimi0 An0lisis D0s0- 6olieknik Ne5e-i S-i2i080. *0n5ik-is0lini.9lo5spo.7om B-0inso-min5o.9lo5spo.7om
