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Sodium Hydroxide Solution: Normal Caustic Soda, 40 g per Litre (Sutton, 1904)
The standard normal (1 M) caustic soda solution for titration: 40 g NaOH in each litre. Make it a little too strong, check it against normal acid, bring it to exact strength and keep it away from the air, which it takes carbon dioxide from.
Result: normal sodium hydroxide solution, its strength proved by titration.
Source: F. Sutton, A Systematic Handbook of Volumetric Analysis (1904), p. 48. Picture: that page of the book.
Mwanzo
Unknown
Maagizo
1
1
Dissolve the caustic soda
Dissolve the caustic soda
Dissolve pure caustic soda in distilled water until the solution has a specific gravity of about 1.05, about 50 g to the litre: a little stronger than normal (40 g to the litre). Expose it to the air as little as possible.
Vifaa kwa hatua hii:
Hidroksidi ya Sodiamu — Daraja la Maabara1 about 50 g per litre
Maji yaliyosafishwa kwa mvuke1 solventZana zinazohitajika:
Silinda yenye vipimo2
2
Titrate and adjust
Titrate and adjust
Estimate its strength roughly with normal acid and methyl orange. Then titrate 50 ml of it exactly against normal acid and adjust it to exact normal strength. Methyl orange works cold even if the solution has taken up some carbon dioxide; with litmus or phenolphthalein, titrate boiling. Not given: the dilution, implied by the adjustment. Ours: hydrochloric acid as the normal acid; methyl orange as the pH indicator solution.
Zana zinazohitajika:
Asidi hidrokloriki
Myeyusho wa Kiashiria cha pH
Bureti (ya kioo)
Pipeti3
3
Store it
Store it
Once its strength is settled, keep it in a bottle that shuts out the air, or in full bottles with their glass stoppers lightly greased with vaseline.
Zana zinazohitajika:
Chupa ya kioo (wazi)
VaseliniVifaa
2- 1 about 50 g per litreKishikilia Nafasi
- 1 solventKishikilia Nafasi
Zana Zinazohitajika
7- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Vifaa vya Michoro Iliyounganishwa
Mchoro huu unatengeneza
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.