Thil hmanraw changkang tak tak kan nei a. Kan thil siamte hi USA, UK leh a dangte tan thawn chhuah a ni a, Bulk Supply-a Factory Liquid Glacial Acetic Acid 99.9% tana client-te zingah dinhmun ropui tak kan nei a, Top quality solutions, advanced concept, leh efficient leh timely provider hmangin customer-te specification zawm emaw tih tluk emaw turin kan theihtawp kan chhuah dawn a ni. Prospect zawng zawng kan lawmpui hle.
Thil hmanraw changkang tak tak kan nei a. Kan thil siamte hi USA, UK leh a dangte tan kan thawn chhuak a, client-te zingah status ropui tak kan nei a, , Kan solution hralh hian risk a siam lo va, chu ai chuan i company tan return sang tak a thlen zawk a ni. Client te tana hlutna siam hi kan tum reng a ni. Kan company hian thinlung takin agent kan zawng mek a ni. Eng nge i nghah? Lo kal la, min rawn zawm ve rawh. Tunah emaw, engtikah mah emaw.














Liquid Glacial Acetic Acid awm zat
Thu bul: Phenolphthalein chu indicator atan hmangin sodium hydroxide standard solution hmanga neutralization titration tih a ni. Formic acid awm zat chu chhut danah hian lak chhuah a ni.
Reagents leh Solution hrang hrangte:
Sodium hydroxide standard solution: c(NaOH) = 1 mol/L.
Phenolphthalein chhinchhiahna: 5 g/L ethanol solution. Phenolphthalein 0.5 g chu 95% (V/V) ethanol 100 ml-ah hmin la, 4 g/L sodium hydroxide solution hmangin pink rawng faint tak a lo lan thlengin neutralize rawh.
Thil hmanrua: Conical weighing bottle (3 ml capacity) a ni a; alkaline burette (50 ml a awm).Liquid Glacial Acetic Acid hmanga siam a ni.
Tih dan: Conical weighing bottle-ah sample 2.5 g vel rit la, 0.0001 g thleng dik takin rit rawh. Bottle chu 250 ml conical flask-ah dah la, chutah chuan carbon dioxide tel lo distilled water 50 ml a awm a. Bottle cap chu hawng la, phenolphthalein indicator 0.5 ml dah la, sodium hydroxide standard solution hmangin second 5 chhung faint pink color a awm thlengin titrate rawh.