SENI
KECANTIKAN & KESEHATAN
KERAJINAN
BUDAYA & SEJARAH
HIBURAN
LINGKUNGAN
MAKANAN & MINUMAN
REKAYASA BALIK
ILMU PENGETAHUAN
OLAHRAGA
TEKNOLOGI
PERANGKAT PAKAI
Purified Copper Sulphate: Iron Thrown Down by Fresh Copper Carbonate, Then Recrystallised
Ordinary copper sulphate usually carries a little iron sulphate. The 1907 US Dispensatory gives the cure: add freshly precipitated copper carbonate, which throws the iron down as carbonate, then filter and crystallise. The pharmacopoeia salt had to be at least 99.5 % pure copper sulphate. Making the copper carbonate from part of the same solution, and drying below 30 °C, are our choices. The source gives no quantities, so none are given here.
The picture: a copper sulphate crystal (Crystal Titan, Wikimedia Commons, CC BY-SA 4.0).
Menengah
Two to three days
Instruksi
1
1
Dissolve in boiling water
Dissolve in boiling water
Dissolve the copper sulphate in boiling distilled water: it takes about half its weight of boiling water (and about 2.2 times its weight of water at 25 °C).
Material untuk langkah ini:
Tembaga sulfat pentahidrat (CuSO4·5H2O)1 as requiredAlat yang dibutuhkan:
Air Suling
Gelas Piala Borosilikat
Batang Pengaduk Kaca
Pelat Pemanas
Kacamata Pelindung Cipratan Kimia
Sarung tangan karet2
2
Make fresh copper carbonate
Make fresh copper carbonate
Take a small part of the solution and stir in sodium carbonate solution: alkaline carbonates decompose copper sulphate and copper carbonate falls. Filter it and wash it with distilled water. Use it fresh.
Alat yang dibutuhkan:
Natrium Karbonat (soda abu)Air SulingGelas Piala BorosilikatBatang Pengaduk Kaca
Corong Kaca Bertangkai
Kertas SaringKacamata Pelindung Cipratan KimiaSarung tangan karet3
3
Throw down the iron and filter
Throw down the iron and filter
Stir the fresh copper carbonate into the hot solution, in excess. The iron is deposited as carbonate. Filter the hot solution clear.
Alat yang dibutuhkan:
Gelas Piala BorosilikatBatang Pengaduk KacaPelat PemanasCorong Kaca BertangkaiKertas SaringKacamata Pelindung Cipratan KimiaSarung tangan karet4
4
Crystallise and dry
Crystallise and dry
Evaporate the filtrate in a dish until crystals begin to form, then let it cool. Large, transparent, deep blue crystals grow. Drain them and dry them in the air below 30 °C: at 30 °C the salt starts to lose its water of crystallisation. It slowly loses water in dry air too, so keep it in stoppered bottles.
Alat yang dibutuhkan:
Cawan PenguapPelat Pemanas
Botol kaca bersumbatSarung tangan karet5
5
Test for iron
Test for iron
Dissolve a crystal in water in a test tube and add ammonia water drop by drop. A pale blue precipitate forms and then dissolves in more ammonia to a deep azure-blue solution. Any iron is thrown down with it and does not dissolve again in the excess, so the solution should stay clear. A salt that turns green on the surface in air still contains iron.
Alat yang dibutuhkan:
Tabung reaksiAir Suling
Larutan amonia encerKacamata Pelindung Cipratan KimiaSarung tangan karetBahan
1- 1 as requiredPlaceholder
Alat yang Diperlukan
13- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
Cetak biru ini membuat
Blueprint terkait
Blueprint ini berbagi pengetahuan — teknik, bahan, atau prinsip
CC0 Domain Publik
Cetak biru ini dirilis di bawah CC0. Anda bebas untuk menyalin, memodifikasi, mendistribusikan, dan menggunakan karya ini untuk tujuan apa pun, termasuk komersial, tanpa meminta izin.
Dukung Maker dengan membeli produk melalui Cetak Biru mereka di mana mereka mendapatkan Komisi Pembuat yang ditetapkan oleh Penjual, atau buat iterasi baru dari Cetak Biru ini dan masukkan sebagai koneksi di milik Anda sendiri.