Widiya Aprilianti (laporan Sementara) Konduktometri.pdf

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LAPORAN SEMENTARA TITRASI KONDUKTOMETRI

Nama

: WIDIYA APRILIANTI

NIM

: 4311416056

Kelompok

: VI

1. Titrasi Asam Kuat ( HCl) - Basa Kuat (NaOH) Penambahan ke -

Penambahan Volume titran (mL) 8 9 10 10.2 10.4 10.8 11 11.2 11.4 11.6 11.8

1 2 3 4 5 6 7 8 9 10 11

Hantaran dalam (ms) 3.51 2.96 0.87 0.86 0.53 2.28 2.35 2.45 2.48 2.53 2.55

Grafik hubungan antara hantaran dan volume titran 4,01 3,51

Konduktivitas

3,01 2,51 2,01 1,51 1,01 0,51

9,7

0,01 0

1

2

3

4

5

6

7

8

Penambahan Titran

9

10

11

12

13

Titik akhir titrasi = 9,7 mL Konsentrasi asam kuat = 0,470 M HCl = HCl + H2O M1V1 = M2V2 0,12 x 10 = M2 x 20 M2 = 0,06 M Teori HCl + H2O = NaOH M1V1 = M2V2 0,06 x 20 = 0,097 x V2 V2 = 12,37 mL ( titik ekuivalen menurut teori ) Percobaan HCl + H2O = NaOH M1V1 = M2V2 M1 x 20 = 0,097 x 9,7 M1 = 0,470 M

2. Titrasi Asam lemah (CH3COOH) - Basa Kuat (NaOH) Penambahan ke -

Penambahan volume titran (ml)

Hantaran dalam (µs)

1 2 3 4 5 6 7 8 9 10 11

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2

288 283 281 278 278 276 284 288 295 302 312

Grafik hubungan antara hantaran dan volume titran 315 310

Konduktivitas

305 300 295 290 285 280 275

1

270 0

0,2

0,4

0,6

0,8

1

1,2

1,4

1,6

1,8

Penambahan titran

Titik akhir titrasi = 1 mL Konsentrasi asam kuat = 0,0009325 M CH3COOH M1V1 0,074 x 50 M2

= CH3COOH + H2O = M2V2 = M2x 100 = 0,037 M

Teori CH3COOH + H2O M1V1 0,037 x 100 V2

= NaOH = M2V2 = 0,09325 x V2 = 39,67 mL ( titik ekuivalen menurut teori )

Percobaan CH3COOH + H2O M1V1 M1 x 100 M1

= NaOH = M2V2 = 0,09325 x 1 = 0,0009325 M

2

2,2

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