Pembuatan Kalsium Karbonat Dari Batu Kapur Bukit Tui Kota Padang Panjang

Rusdi Rusdi; Metalia Maryesri; Zulharmitta Zulharmitta

doi:10.52689/higea.v5i2.88

Pembuatan Kalsium Karbonat Dari Batu Kapur Bukit Tui Kota Padang Panjang

Rusdi Rusdi, Metalia Maryesri, Zulharmitta Zulharmitta

Sari

A Research has been done about preparing calcium carbonat from limestone of Bukit Tui Kota Padang Panjang. The sample as much as 20 g was dissolved in HCl 6 M, the resulting filtrate reacted with NH₄OH 6 M to the pH of 8 and reacted with (NH₄)₂CO₃ 6 M until no more precipitate was was formed. The precipitate was separated and dried in oven for 4 hours at 105^ºC. Ten g of the dried precipitate was determined complexometrically using EDTA as complexson and murexide as indicator. It was found that the limestone at Bukit Tui Kota Padang Panjang contained 67.2 % w/w calcium carbonate in comparison to reference compound 103.99 % w/w.

Kata Kunci

Limestone, calcium carbonat, complexometri

Teks Lengkap:

PDF (English)

Referensi

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DOI: http://dx.doi.org/10.52689/higea.v5i2.88