“Tthatnak, bawmhnak, riantuan ning le tthanchonak” timi na phunglam kha zulh in, atu cu ramchung le ramleng riantuanpi hawi hna sin in Factory Supplied Industrial Grade Glacial Acetic caah zumhnak le thangthatnak kan hmuh cang, A ttha bikmi le zuamnak man nih kan thilri pawl cu vawleicung hmunkip ah a sang deuhmi dirhmun ah a kan lawmhter.
“Tthatnak, bawmhnak, riantuan ning le tthanchonak” timi na phunglam kha zulh in, atu cu ramchung le ramleng riantuanpi hawi hna sin in zumhnak le thangthatnak kan hmuh cang, kan sehzung i a ttha bikmi a phichuak kan si caah, kan a phichuak phunphun cu hneksak an si i hmuhtonnak a ngeimi nawlngeihnak hnatlaknak kan hmuh. A dang parameters le thilri cazin kongkau hna caah, a dang nformation hmuh khawhnak ding caah button kha hmet hrimhrim.














5. Hneksaknak:
1. Formic Acid:
a. Tuah ning: 100 ml beaker chungah sample 5 g hrawng (technical balance hmangin) rit. Phenolphthalein hmelchunhnak cawhnuk 2 cawh law 2 N NaOH cawhnuk in a senmi rong a chuah hlan tiang tlawmter. Ti hnimhnak ah a hramthawk zat cheukhat tiang hnim. A lumter, 5 ml a tlawmmi HCl he acid a chuahter, cun ti 50 ml le 0.1 N NaBrO cawhmi 50 ml aa telmi 250 ml iodine thawl chungah tlawmpal in thlen. Fek tein khar, ttha tein cawh, cun minutes 30 chung chiah. 16.5% KI cawhnuk 15 ml, 6 N HCl 20 ml, le changvut hmelchunhnak cawhnuk 2 ml cawh. A senmi rong a tlau hlan tiang 0.1 N Na2S2O3 cawhmi in titrate tuah (a donghnak). Blank test kha caankhatte ah tuah.
b. Tuaktannak: (Blank ml – Sample ml) × 0.1 (Normality) × 0.02301 = HCOOH grams
c. Grade Glacial Acetic Note: NaOH chap hnu ah ti hnimhnak cung ah lumternak cu a lumter i acetaldehyde chuahter a si, cu lo ahcun a sangmi thil a chuahter lai.Grade Glacial Acetic.
2. Acetaldehyde:
a. Tuah ning: 250 ml iodine flask chungah glacial acetic acid 10 g hrawng (technical balance hmangin) rit. Ti 50 ml cawh law, cun 4% NaHSO3 cawhmi 10 ml tluk tein flask chungah cawh. Fek tein khar, hninh, cun minutes 30 chung dirter. Starch langhternak cawhnuk 2 ml cawh law 0.1 N Iodine cawhnuk in a senmi rong a chuah hlan tiang titrate tuah (a donghnak). Blank test kha caankhatte ah tuah.
b. Tuaktannak: (Blank ml – Sample ml) × 0.1 (Normality) × 0.02203 = CH3CHO grams
6. Reagent timhtuahnak:
0.1 N Sodium Hypobromite (NaBrO) Cawhmi: Ti 500 ml ah bromine 2.8 ml cawh. N NaOH 100 ml cawh law a rawk tiang cawh. 0.1 N NaBrO cawhmi hmuh khawhnak dingah ti in 1000 ml tiang cawh.
6. Grade Glacial Acetic Reagent Timhtuahnak:
0.1 N Sodium Hypobromite (NaBrO) Cawhmi: Ti 500 ml ah bromine 2.8 ml cawh. N NaOH 100 ml cawh law a rawk tiang cawh. 0.1 N NaBrO cawhmi hmuh khawhnak dingah ti in 1000 ml tiang cawh.