Prosedur Kerja Praktikum Kimia " TITRASI ASAM - BASA "

TITRASI ASAM BASA

Standar Kompetensi               Memahami sifat-sifat larutan asam-basa, metode pengukuran, dan terapannya

Kompetensi Dasar                   Menghitung banyaknya pereaksi dan hasil reaksi dalam larutan elektrolit dari hasil titrasi asam basa

Indikator                                 Menentukan konsentrasi asam atau basa dengan titrasi

Alat dan Bahan

Alat: 

1. gelas ukur

2. Pipet tetes

3. gelas kimia

4. Buret, Statif, klem

5. corong

Bahan :

1.  Larutan NaOH 1M

2.  Larutan HCl

3.  Penolptalin

Prosedur

1.      Pasang buret pada statif dan klem

2.      Isi gelas kimia dengan 10 ml larutan HCl

3.      Isi buret dengan NaOH 1M sampai tanda nol

4.      Letakan gelas kimia dibawah buret alasi dengan kertas putih

5.      Tetesi larutan HCl  tadi dengan 1 tetes penolptalin

6.      Kemudian tambahkan dengan larutan NaOH 1 M dari buret tetes demi tetes sampai larutan berwarna merah jambu

7.      Catat volume NaOH 1 M yang diperlukan/ terpakai

8.      Ulangi percobaan seperti tadi  dengan penolptalin 2 dan 3 tetes !

Pengamatan :

No	Volume HCl	Jml tetes PP	Volume NaOH 1 M
1. 2. 3.	..................  ml ..................  ml ..................  ml	..................   tetes ..................   tetes ..................   tetes	..................  ml ..................  ml ..................  ml

Pertanyaan :

1.      Tuliskan reaksi kimia dari percobaan tadi

2.      Berapa konsentrasi HCl ?

3.      Berapa pH pada saat titik ekivalen ?

SELAMAT BEKERJA

LEMBAR KERJA SISWA

NAMA                                    :  .............................................

MATA PELAJARAN                        :  .............................................

KELAS/PROGRAM              :  .............................................

PAKET SOAL                       :  ..............................................

Judul Praktek                        :

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Alat dan Bahan         :

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Hasil Pengamatan     :

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Jawaban Pertanyaan            :

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PENILAIAN
Sikap Ilmiah
Kinerja Ilmiah
Jawaban pertanyaan
Nilai Rata-rata