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19
LAMPIRAN I
Perhitungan Standarisasi Larutan Standart Dinatrium EDTA 0,01 M :
1.Larutan Kalsium Karbonat 0,01 M
Diketahui :
Berat CaCO3 yang ditimbang = 1,00284 gram
Mr CaCO3 = 100,09
Volume = 1000 mL
Keterangan :
M =
)
M =
M =
M= 0,01001938
Maka Molaritas Larutan CaCO3 = 0,01 M
2.Larutan Dinatrium EDTA 0,01 M
Diketahui:
M CaCO3 = 0,01 M
Volume CaCO3 = 10 ml
Volume CaCO3 yang di pipet :
V1 = 10, mL
V2 = 10,1 mL
V3 = 10,1 mL
20
Rata –rata =
=
= 10,06
Jadi M Na2EDTA :
M Na2EDTA =
(mmol / mL)
=
=
= 0.009940 M
Maka Molaritas Dinatrium EDTA adalah 0,009940 M
21
LAMPIRAN II
Komposisi Sampel
Sampel A ( Pepsodent Whitening)
Sampel B ( Systema Nano)
Sampel C (Zact)
22
LAMPIRAN III
Perhitungan Kadar senyawa abrasif ( Ca) dalam sampel
1. Kadar senyawa abrasif (Ca) untuk sampel A ( Pepsodent Whitening)
Sampel A1
Diketahui :
Molaritas Na2EDTA = 0,009940 M
Kesetaraan ( ) = 1 mL Dinatrium EDTA 0,0 1 M 4,008 mg Ca
Berat Sampel ( G) = 15,6 g x 1/5 = 3,12 g = 3.120 mg
Volume titrasi = 3,2 mL
Pengenceran sampel = )
) = 5
Kadar Kalsium (%
) = V x M/0,01 x ( ) 4,008 mg x P
(%
) = 3,2 x 0,009940/0,01 x 4,008 x 5 X 100 %
3.120 mg
(%
) = 2,043 %
Sampel A 2
Diketahui :
Molaritas Na2EDTA = 0,009940 M
Kesetaraan ( ) = 1 mL Dinatrium EDTA 0,0 1 M 4,008 mg Ca
Berat Sampel ( G) = 15,2 g x 1/5 = 3,40 g = 3.040 mg
Volume titrasi = 3,3 mL
Pengenceran sampel = )
) = 5
Kadar Kalsium (%
) = V x M/0,01 x ( ) 4,008 mg x P
G (mg)
X 100 %
G (mg)
X 100 %
23
(%
) = 3,3 x 0,009940/0,01 x 4,008 x 5 X 100 %
3.040 mg
(%
) = 2,162 %
Sampel A 3
Diketahui :
Molaritas Na2EDTA = 0,009940 M
Kesetaraan ( ) = 1 mL Dinatrium EDTA 0,0 1 M 4,008 mg Ca
Berat Sampel ( G) = 15,48 g x 1/5 = 3,096 g = 3.096 mg
Volume titrasi = 3,2 mL
Pengenceran sampel = )
) = 5
Kadar Kalsium (%
) = V x M/0,01 x ( ) 4,008 mg x P
(%
) = 3,2 x 0,009940/0,01 x 4,008 x 5 X 100 %
3.096 mg
(%
) = 2,058 %
2. Kadar senyawa abrasif (Ca) untuk sampel B ( Systema Nano)
Sampel B 1
Diketahui :
Molaritas Na2EDTA = 0,009940 M
Kesetaraan ( ) = 1 mL Dinatrium EDTA 0,0 1 M 4,008 mg Ca
Berat Sampel ( G) = 15,018 g x 1/5 = 3,003 g = 3.003 mg
Volume titrasi = 3,8 mL
Pengenceran sampel = )
) = 5
Kadar Kalsium (%
) = V x M/0,01 x ( ) 4,008 mg x P
G (mg)
X 100 %
G (mg)
X 100 %
24
(%
) = 3,8 x 0,009940/0,01 x 4,008 x 5 X 100 %
3.003 mg
(%
) = 2,520 %
Sampel B 2
Diketahui :
Molaritas Na2EDTA = 0,009940 M
Kesetaraan ( ) = 1 mL Dinatrium EDTA 0,0 1 M 4,008 mg Ca
Berat Sampel ( G) = 15,018 g x 1/5 = 3,003 g = 3.026 mg
Volume titrasi = 3,8 mL
Pengenceran sampel = )
) = 5
Kadar Kalsium (%
) = V x M/0,01 x ( ) 4,008 mg x P
(%
) = 3,8 x 0,009940/0,01 x 4,008 x 5 X 100 %
3.026 mg
(%
) = 2,501 %
Sampel B 3
Diketahui :
Molaritas Na2EDTA = 0,009940 M
Kesetaraan ( ) = 1 mL Dinatrium EDTA 0,0 1 M 4,008 mg Ca
Berat Sampel ( G) = 15,21 g x 1/5 = 3,042 g = 3.042 mg
Volume titrasi = 4 mL
Pengenceran sampel = )
) = 5
Kadar Kalsium (%
) = V x M/0,01 x ( ) 4,008 mg x P
G (mg)
X 100 %
G (mg)
X 100 %
25
(%
) = 4 x 0,009940/0,01 x 4,008 x 5 X 100 %
3.042 mg
(%
) = 2,619 %
3. Kadar senyawa abrasif (Ca) untuk sampel C ( Systema Nano)
Sampel C 1
Diketahui :
Molaritas Na2EDTA = 0,009940 M
Kesetaraan ( ) = 1 mL Dinatrium EDTA 0,0 1 M 4,008 mg Ca
Berat Sampel ( G) = 15,08 g x 1/5 = 3,016 g = 3.016 mg
Volume titrasi = 4 mL
Pengenceran sampel = )
) = 5
Kadar Kalsium (%
) = V x M/0,01 x ( ) 4,008 mg x P
(%
) = 4 x 0,009940/0,01 x 4,008 x 5 X 100 %
3.016 mg
(%
) = 2,641 %
Sampel C 2
Diketahui :
Molaritas Na2EDTA = 0,009940 M
Kesetaraan ( ) = 1 mL Dinatrium EDTA 0,0 1 M 4,008 mg Ca
Berat Sampel ( G) = 15,001 g x 1/5 = 3 g = 3.000 mg
Volume titrasi = 3,9 mL
Pengenceran sampel = )
) = 5
Kadar Kalsium (%
) = V x M/0,01 x ( ) 4,008 mg x P
G (mg)
X 100 %
G (mg)
X 100 %
26
(%
) = 3,9 x 0,009940/0,01 x 4,008 x 5 X 100 %
3000 mg
(%
) = 2,589 %
Sampel C 3
Diketahui :
Molaritas Na2EDTA = 0,009940 M
Kesetaraan ( ) = 1 mL Dinatrium EDTA 0,0 1 M 4,008 mg Ca
Berat Sampel ( G) = 15,05 g x 1/5 = 3,01g = 3.010 mg
Volume titrasi = 4 mL
Pengenceran sampel = )
) = 5
Kadar Kalsium (%
) = V x M/0,01 x ( ) 4,008 mg x P
(%
) = 4 x 0,009940/0,01 x 4,008 x 5 X 100 %
3.010 mg
(%
) = 2,647 %
G (mg)
X 100 %
27
LAMPIRAN IV
Data Perhitungan Persentase Kadar Rata-rata Dan Perhitungan Simpangan Kadar
Kalsium
Sampel A
1. X₁ = 2,043 %
2. X₂ = 2,162 %
3. X₃ = 2,058 %
Simpangan kadar 1 dan 2
kadar rata-rata =
=
= 2,1025 %
% Simpangan kadar = ₁
x 100%
=
x 100%
=
x 100%
= 2,82 %
Simpangan kadar 2 dan 3
kadar rata-rata =
=
= 2,11 %
28
% Simpangan kadar =
x 100%
=
x 100%
=
x 100%
= 2,46 %
Simpangan kadar 3 dan 1
kadar rata-rata =
=
= 2,050 %
% Simpangan kadar =
x 100%
=
x 100%
=
x 100%
= 0,39 %
Kadar sebenarnya diperoleh dari kadar rata-rata dengan simpangan kadar
terkecil yaitu 2,050 %
Sampel B
1. X₁ = 2,5206 %
2. X₂ = 2,501 %
3. X₃ = 2,619 %
29
Simpangan kadar 1 dan 2
kadar rata-rata = ₁ ₂
=
= 2,5108 %
% Simpangan kadar = ₁
x 100%
=
x 100%
=
x 100%
= 0,390 %
Simpangan kadar 2 dan 3
kadar rata-rata =
=
= 2,56 %
% Simpangan kadar =
x 100%
=
x 100%
=
x 100%
= 2,30 %
Simpangan kadar 3 dan 1
kadar rata-rata =
=
= 2,57%
30
% Simpangan kadar =
x 100%
=
x 100%
=
x 100%
= 1,90 %
Kadar sebenarnya diperoleh dari kadar rata-rata dengan simpangan kadar terkecil
yaitu 2,5108 %
Sampel C
1. X₁ = 2,641 %
2. X₂ = 2,589 %
3. X₃ = 2,647 %
Simpangan kadar 1 dan 2
kadar rata-rata = ₁ ₂
=
= 2,615 %
% Simpangan kadar = ₁
x 100%
=
x 100%
=
x 100%
= 0,99%
31
Simpangan kadar 2 dan 3
kadar rata-rata =
=
= 2,618 %
% Simpangan kadar =
x 100%
=
x 100%
=
x 100%
= 1,10 %
Simpangan kadar 3 dan 1
kadar rata-rata =
=
= 2,644 %
% Simpangan kadar =
x 100%
=
x 100%
=
x 100%
= 0,11 %
Kadar sebenarnya diperoleh dari kadar rata-rata dengan simpangan kadar terkecil
yaitu 2,644 %
32
LAMPIRAN V
DAFTAR KADAR KALSIUM
Tabel 5.1 Daftar Sampel Kode A
Kode
sampel
Kadar
Kalsium (%)
Kadar
rata-rata
(%)
Standart
deviasi
Standart
devisi
terkecil
Kadar
sebenarnya
Ket
A1 2,043 % 2,1025 % 2,82 %
0.39%
2,050%
MS A2 2,162 % 2,11 % 2,46%
A3 2,058 % 2,050% 0,39%
Tabel 5.2 Daftar Sampel Kode B
Kode
sampel
Kadar
Kalsium (%)
Kadar
rata-rata
(%)
Standart
deviasi
Standart
devisi
terkecil
Kadar
sebenarnya
Ket
B1 2,5206 % 2,5108 % 0,390 %
0.390%
2,5108 %
MS B2 2,501 % 2,56 % 2,30%
B3 2,619 % 2,57 % 1,90 %
Tabel 5.3 Daftar Sampel Kode C
Kode
sampel
Kadar
Kalsium (%)
Kadar
rata-rata
(%)
Standart
deviasi
Standart
devisi
terkecil
Kadar
sebenarnya
Ket
C1 2,641% 2,615% 0,99 %
0,11%
2,644 %
MS C2 2,589 % 2,618 % 1,10 %
C3 2,647 % 2,644 % 0,11%
Keterangan:
MS = Memenuhi Syarat
TMS = Tidak Memenuhi Syarat
33
LAMPIRAN VI
DAFTAR GAMBAR
Peralatan penelitian Sampel Ditimbang
Sampel setelah ditimbang Sampel dilarutkan dengan air hangat
Sampel dimasukan dalam labu Sampel di ad-kan dengan akuades
34
Sampel di pipet 50ml ke dalam Erlenmeyer
Sampel setelah di beri NaOH 1 N dan indikator Mureksid
Sampel setelah di titrasi dengan larutan Na2EDTA 0,01 M