Ni lubu cik peri mi "ber, kony, tic man dongo", kawoni dong wanwango gen man foc kud ibang juruwil mi ngom man mi ngom mange pi Factory Supplied Industrial Grade Glacial Acetic, ber man wel maber miyo piny mwa bedu maber akeca.
Ni lubu cik peri mi "ber, kony, tic maber man dongo", kawoni dong wanwango gen man foc kud ibang juruwil mi ngom mwa man mi ngom mange pi , Ni bedo yore maber loyo mi factory mwa, yore mwa ma watiyo kudu ju temo man wa nwango certificate mi twero. Pi lembe mukende man lembe mukende, bed ma ingeyo nia i dii iwi button ni nwangu lembe mukende.














5. Tembe:
1. Formic Acid:
a. Yore: Pimu pek pa 5 g pa lanyuth (ku tic ku jam pimo) i 100 ml beaker. Med pii 2 pa phenolphthalein indicator solution man jwigo ku 2 N NaOH solution nitundo ma rangi makwar wok. Med pii iwi pii ni nusu pa dwong pa piny. Lwiny, med acid ku 5 ml pa HCl, man iter i 250 ml pa iodine flask ma tye ku 50 ml pa pii man 50 ml pa 0.1 N NaBrO solution. Um matek, rub maber, man wek ucung pi dakika 30. Med 15 ml pa 16.5% KI solution, 20 ml pa 6 N HCl, man 2 ml pa starch indicator solution. Titrate ku 0.1 N Na2S₂O3 solution nitundu rangi macol uthum (i thum). Tim penji ma goro i saa marom.
b. Kwan: ​​(Blank ml – Sample ml) × 0.1 (Normality) × 0.02301 = grams of HCOOH
c. Grade Glacial Acetic Note: Lyethu iwi pii ingey medu NaOH juyike pi jwigo man kwanyu acetaldehyde, ma copo kelo adwogi maber. Grade Glacial Acetic.
2. Acetaldehyde:
a. Yore: Pim 10 g pa glacial acetic acid (ku tic ku jam pimo) i 250 ml pa iodine flask. Med 50 ml pa pii, man i pipet 10 ml pa 4% NaHSO3 i flask. Um matek, yeny, man iwek ucung pi dakika 30. Med 2 ml pa starch indicator solution man titrate ku 0.1 N Iodine solution nitundu rangi macol wok (i thum). Tim penji ma goro i saa marom.
b. Kwan: ​​(Blank ml – Sample ml) × 0.1 (Normality) × 0.02203 = grams of CH₃CHO
6. Yub pa reagent:
0.1 N Sodium Hypobromite (NaBrO) Solution: Med 2.8 ml pa bromine i 500 ml pa pii. Med 100 ml pa 2 N NaOH man irub nitundo epodho. Medu ku pii ni 1000 ml mi nwangu 0.1 N NaBrO solution.
6. Yub pa Glacial Acetic Reagent:
0.1 N Sodium Hypobromite (NaBrO) Solution: Med 2.8 ml pa bromine i 500 ml pa pii. Med 100 ml pa 2 N NaOH man irub nitundo epodho. Medu ku pii ni 1000 ml mi nwangu 0.1 N NaBrO solution.