SBU's REVIEW (quantitative)

Subjek : KOMPLEKSOMETRI

Assessment : individually, (number 3 must be different to each other)

Type : questions, can be in English or Bahasa Indonesia

Any references or literaries must be written (Handbook, Journal, modul, etc)

to d' poin >>>

1) Suatu sampel A dan B memiliki kesadahan total 850 ppm dan 400 ppm. Serta kesadahan sementara 150 dan 200 ppm. Kemudian sampel A dan B masing-masing diambil 100 ml dan 10 ml nya dititrasi dengan EDTA sehingga didapatkan kesadahan tetapnya.

a. Berapa volume EDTA yang dibutuhkan untuk menitrasi tiap sampel?

b. Berapa volume EDTA yang dibutuhkan untuk mengetahui kadar CaO dalam 250 ml sampel. Yang diambil 20 ml , diencerkan sampai 100 ml dan diambil lagi 10 ml untuk dititrasi. Bila diketahui kadar teoritisnya 9,8784 gram dan persen errornya 30%. (Normalitas EDTA = 0,01 N)

2) Explain the differences of temporary and permanent hardness, and how to process them! (write down the references/literaries)

3) Explain the application and impact of using hard water for daily life and for industrial consumption. (give an example of industry, must be different to each other).

4) Buat ringkasan (singkat aja, max 4 halaman) hasil praktikum kalian:

        Format : Judul-Tujuan-Bahan&Alat(+gambar)-Cara Kerja-Hasil & Pembahasan-Kesimpulan.

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Your review must be send to : sbu_21@yahoo.com (1 group >>> 1 mail (attachment))

Deadline : 27-11- 2011 (22.01 wib)

Prerequirement : everyone must leave comment on chemengstori.blogspot.com after send your review.

(format: name_NIM_group-day_comment)

Further information: 08995595752/085652407752

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MUCHAS gracias