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5. Dodokpɔwo:
1. Aɖi si woyɔna be Formic Acid:
a. Alesi woawɔe: Da kpɔɖeŋua ƒe g 5 (zã mɔ̃ɖaŋununya ƒe dadasɔ) ɖe 100 ml ƒe nugoe me. Tsɔ phenolphthalein indicator solution 2 de eme eye nàtsɔ 2 N NaOH solution awɔe wòazu nusi mewɔa dɔ o vaseɖe esime amadede dzĩ aɖe nadze. Tsɔe ƒu gbe le tsiléƒe vaseɖe eƒe agbɔsɔsɔme gbãtɔ ƒe afã. Fae, nàtsɔ HCl si me wode 5 ml awɔ acide, eye nàtsɔe ade iodine ml 250 ƒe tsigoe si me tsi 50 ml kple 0.1 N NaBrO solution 50 ml le me le agbɔsɔsɔ me. Tsɔe blae nyuie, tsakae nyuie, eye nàna wòatsi tre aɖabaƒoƒo 30. Tsɔ 16.5% KI solution 15 ml, 6 N HCl 20 ml, kple starch indicator solution 2 ml de eme. Titrate kple 0.1 N Na2S2O3 solution vaseɖe esime amadede blɔa nabu (nuwuƒe). Wɔ dodokpɔ ƒuƒlu aɖe le ɣeyiɣi ɖeka me.
b. Akɔntabubu: (Ml ƒuƒlu – Kpɔɖeŋu ml) × 0.1 (Ame si sɔ) × 0.02301 = HCOOH gram
c. Grade Glacial Acetic De dzesii: Dzoxɔxɔ le tsiléƒea le NaOH dede eme vɔ megbe la, woɖoe be wòana acetaldehyde nazu ya eye wòaɖe acetaldehyde ɖa, si ne menye nenema o la, ana nu geɖe nado tso eme.Grade Glacial Acetic.
2. Acetaldehyde si nye:
a. Alesi woawɔe: Da glacial acetic acid si ade g 10 (zã mɔ̃ɖaŋununya ƒe dadasɔ) ɖe iodine ml 250 me. Tsɔ tsi 50 ml de eme, emegbe nàtsɔ 4% NaHSO3 solution 10 ml pɛpɛpɛ aƒo ɖe nugoe la me. Tsɔe blae sesĩe, ʋuʋui, eye nàna wòatsi tre aɖabaƒoƒo 30. Tsɔ starch indicator solution 2 ml de eme eye nàtsɔ 0.1 N Iodine solution awɔ titrate vaseɖe esime amadede blɔ aɖe nadze (nuwuƒe). Wɔ dodokpɔ ƒuƒlu aɖe le ɣeyiɣi ɖeka me.
b. Akɔntabubu: (Ml ƒuƒlu – Kpɔɖeŋu ml) × 0.1 (Ame si sɔ) × 0.02203 = CH3CHO gram
6. Reagent Dzadzraɖo:
0.1 N Sodium Hypobromite (NaBrO) Solution: Tsɔ bromine ml 2.8 de tsi ml 500 me. Tsɔ 2 N NaOH 100 ml de eme eye nàʋuʋui vaseɖe esime wòaƒu. Tsɔ tsi ƒoe vaseɖe 1000 ml be nàkpɔ 0.1 N NaBrO solution.
6. Grade Glacial Acetic Reagent Dzadzraɖo:
0.1 N Sodium Hypobromite (NaBrO) Solution: Tsɔ bromine ml 2.8 de tsi ml 500 me. Tsɔ 2 N NaOH 100 ml de eme eye nàʋuʋui vaseɖe esime wòaƒu. Tsɔ tsi ƒoe vaseɖe 1000 ml be nàkpɔ 0.1 N NaBrO solution.