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Cara Membuat Indikator PP dan Bromo Timol Biru

Cara Membuat Indikator PP dan Bromo Timol Biru – Beberapa waktu yang lalu, rekan guru yang mengampu pelajaran Biologi mau mengadakan praktikum dengan murid-muridnya. Dalam praktikum itu, Beliau membutuhkan indikator. Indikator yang dibutuhkan adalah indikator PP / Phenol Phtalein dan indikator Bromo Timol Biru / bromo timol blue. Karena di laboratorium belum ada, jadi saya diminta untuk membuatkannya. Ok, kali ini saya akan berbagi informasi mengenai Cara Membuat Indikator PP dan BTB.

Cara Membuat Indikator PP dan Bromo Timol Biru

Cara Membuat Indikator PP Cara Membuat Indikator PP dan Bromo Timol Biru

1. Bahan dan Cara Membuat Indikator PP

Bahan-bahan dalam pembuatan indikator PP atau Phenol Phtalein adalah serbuk phenol phtalein sebanyak 0,25 gr. Kemudian kita juga membutuhkan alkohol 70% sebanyak 20ml dan aquades 10ml.

Untuk alkoholnya, jika yang tersedia adalah alkohol 99,9%, maka harus diencerkan dulu ya, hingga menjadi 70%, menggunakan rumus pengenceran yaitu V1.M1 = V2.M2

V1.M1      =  V2.M2
V1.99,9% =  100 ml.70%
V1            =  70,07 ml

Sehingga untuk mendapatkan alkohol 70%, kita ambil 70,07 ml alkohol kemudian diencerkan dengan aquades hingga 100ml.

Cara Membuat Indikator Bromo Timol Biru Cara Membuat Indikator PP dan Bromo Timol Biru

Bahan Indikator PP Cara Membuat Indikator PP dan Bromo Timol Biru

Langkah pembuatannya :

Serbuk Phenol Phtalein atau PP dimasukkan ke dalam botol kecil, kemudian ambil alkohol sebanyak 20ml dengan menggunakan pipet volume. Alkohol tersebut dimasukkan ke dalam botol kecil tadi yang di dalamnya ada serbuk PP. Masukkan pula aquades 10ml, kemudian di aduk dan jadilah indikator PP.

Cara Membuat Indikator PP dan Bromo Timol Biru

2. Bahan dan Cara Membuat Indikator Bromo Timol Biru atau BTB

Untuk proses pembuatan indikator yang keduat yaitu indikator BTB atau bromo timol biru atau blue, sama persis dengan saat pembuatan PP. Hanya saja, serbuk yang digunakan dalam indikator BTB adalah serbuk bromo timol blue.

Bahan Indikator Bromo Timol Biru Cara Membuat Indikator PP dan Bromo Timol Biru

Alkohol yang digunakan juga 70% sebanyak 20ml ditambah aquades 10 ml dimasukkan ke dalam botol yang di dalamnya tersedia serbuk BTB 0,25 gr. Setelah dimasukkan, kemudian di aduk dan akan terjadi warna orange. Kalau PP tadi masih jernih.

Cara Membuat Indikator PP dan Bromo Timol Biru Cara Membuat Indikator PP dan Bromo Timol Biru

Ok, itu saja sedikit ilmu cara pembuatan indikator yang akan digunakan dalam berbagai praktikum. Jika belum jelas, silahkan melihat video yang telah saya buat.

Cara Membuat Indikator PP dan Bromo Timol Biru

About DaddySunSek

Seorang laki-laki sederhana dari Kota Gaplek, Wonogiri. Pernah belajar di Universitas Negeri Semarang dan kini mengajar Kimia di SMA Islam Al Azhar 7 Solo Baru, Sukoharjo. Selain mengabdi di dunia pendidikan, saya juga aktif di dunia Internet Marketing. Salam Sukses dari Wonogiri View all posts by DaddySunSek →

4 Responses to Cara Membuat Indikator PP dan Bromo Timol Biru

  1. Pingback: Video : Bahan dan Cara Pembuatan Indikator PP dan BTB | Phenol Phthalein | Bromo Timol Biru

  2. DX says:

    mas broo,…
    emank ada ya alkohol 99,9 %,…
    klo’ ada boleh saya beli,…

  3. Abu Umar says:

    Mas Bro.. Kalo Bromothymol Blue belinya di mana dan Harganya kira2 berapa? Terimakasih Atas Infonya. Tolong kirim ke email: abuumaralbekasi@yahoo.co.id

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