PERCOBAAN 1. KOLORIMETRI.docx

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    F. Grafik

    Bagian 1. Sistem Besi (II) Tiosianat

    y = -0.0004x + 0.3804

    R = 0.0626

    0

    0.1

    0.2

    0.3

    0.4

    0.50.6

    0 50 100 150

    Absorbansi(Abs)

    Waktu (menit)

    Pengaruh Waktu terhadap

    Absorbansi

    0

    0.05

    0.1

    0.150.2

    0.25

    0.3

    0.35

    0.4

    0 1 5 tetes 7 tetes 9 tetes

    Absorba

    nsi(Abs)

    Pengaruh pH terhadap

    Absorbansi

    y = 0.0001x + 0.3851

    R = 0.8812

    0

    0.1

    0.2

    0.3

    0.4

    0.5

    0.6

    0.7

    0.8

    0 1000 2000 3000 4000

    Absorbansi(Abs)

    Angka Banding Fe3+:SCN

    Pengaruh Kelebihan Pereaksiterhadap Absorbansi

    Waktu

    (menit)

    Absorbansi

    (Abs)

    0 0.294

    30 0.484

    60 0.358

    90 0.340

    120 0.306

    pHAbsorbansi

    (Abs)

    0 0.350

    1 0.369

    Bervariasi

    5

    tetes

    NaOH

    0.371

    7

    tetes

    NaOH

    0.343

    9

    tetes

    NaOH

    0.278

    Angka

    Banding

    Fe3+

    :SCN

    Absorbansi(Abs)

    30 0.318

    80 0.380

    300 0.463

    1000 0.566

    2000 0.604

    3000 0.700

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    Bagian 2. Sistem Besi (II) Ortofenantrolin

    pH = 1, 0.369

    NaF, 0.078Na2C2O4,

    0.08

    KH2PO4,

    0.164

    Na-tartrat,

    0.311

    0

    0.05

    0.1

    0.15

    0.2

    0.25

    0.3

    0.35

    0.4

    0 1 2 3 4 5 6

    Absorbansi(Abs)

    Pengaruh Anion terhadap

    Absorbansi

    y = -0.001x + 0.2192

    R = 0.5891

    0

    0.05

    0.1

    0.15

    0.2

    0.25

    0 20 40 60 80 100 120 140

    Absorbansi(A

    bs)

    Waktu (menit)

    Pengaruh Waktu terhadap

    Absorbansi

    y = 0.06x + 0.071

    R = 0.9859

    0

    0.1

    0.2

    0.3

    0.4

    0 1 2 3 4 5

    Absorbansi(Abs)

    Volume O-Fn (mL)

    Pengaruh Kelebihan Pereaksi

    terhadap Absorbansi

    Anion

    Absorbansi

    (Abs)

    NaF 0.078

    Na2C2O4.2H2O 0.080

    Na-tartat 0.311

    KH2PO4 0.164

    Waktu

    (menit)

    Absorbansi

    (Abs)

    0 0.188

    30 0.198

    60 0.188

    90 0.174

    120 0.052

    Volume O-Fn(mL)

    Absorbansi(Abs)

    0 0.077

    0.2 0.078

    0.4 0.082

    0.6 0.096

    0.8 0.127

    1.0 0.147

    3.0 0.257

    4.0 0.304

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