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3. A chipchiar zawng: 1.1.
A lan dan: Color nei lo, transparent liquid.
Assay (Content): 98% aia tlem lo.
Formic Acid: A tam berah 0.5% a ni.
4. Glacial Acetic Acid Gaa Liquid hmanga thil siam chhuah dan tehna:
A rilru a hah lutuk chuan a rilru a buai em em a, a rilru a hah lutuk chuan a rilru a buai em em bawk a. CH3COOH + NaOH → CH3COONa + H2O
Tih dan: Glacial acetic acid 0.5 ml vel chu pre-weighed 150 ml iodine flask-ah tui 25 ml awmnaah dah la. Flask chu nghet takin stop la, mix tha la, rit leh rawh. Weight pahnih inthlauhna hian sample weight a entir a ni. Tui 10 ml leh phenolphthalein indicator 3 drops dah la. 0.5 N NaOH solution hmangin pink color-in a tawp ber a chhinchhiah thlengin titrate rawh.Glacial Acetic Acid Gaa Liquid.
Chhiar dan: ml (NaOH) × 0.5 (Normality) × 0.06005 = CH3COOH gram a ni
(Hriat tur: Chhiar dan chuan a result chu gram-a rit a ni tih a ngaihtuah mai thei a, chu chu sample rit nena khaikhin chuan percentage thianghlimna zawng nan hman a ni).