Q. 235.0( 1 Vote )

A student is studying the properties of acetic acid in his school laboratory. List two physical and two chemical properties which he must observe and note in his record book.

Two physical and two chemical properties that must be observed and noted are:

Answer :

Physical properties:


a) Acetic acid is soluble in water.


b) Acetic acid has a vinegar like sour smell/odour.


Chemical properties:


a) Acetic acid reacts with sodium bicarbonate to give a brisk effervescence (Carbon dioxide:CO2) which turns limewater milky, sodium acetate (CH3COONa) and water.


CH3COOH + NaHCO3 CH3COONa + CO2 + H2O


Ca(OH)2 + CO2 CaCO3 + H2O


b) It is a weak acid and turns blue litmus red. It dissociates into acetate ion and hydronium ion.


CH3COOH CH3COO- + H3O+


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