What you know about acetic acid?Acetic acid is an organic acid with the formula CH3-COOH. Its functional group is carboxylic acid group.Acetic acid is a monocarboxylic acid because it contains only one "COOH"group. It has a sour taste and pungent smell. It is the main component of vinegar. Vinegar is typically 3-7% solution of acetic acid in water. Vinegar is mainly used as a preservative in food and in the pickling of vegetables. Water free acetic acid is known as glacial acetic acid.What are the properties of acetic acid?Acidic characterWhen dissolved in water, acetic acid undergoes dissociation to form hydrogen (H+) ion. Because of the release of a proton, acetic acid has an acidic character. It turns blue litmus paper red, indicating that it is acidic in nature. However, it is a weak acid because it does not dissociate completely in aqueous solution.Reaction with sodium bicarbonateAcetic acid reacts with sodium bicarbonate to produce carbon dioxide.On passing CO2 gas through lime water, the lime water turns milky. The milky appearance of lime water is due to the formation of solid calcium carbonate (CaCO3).Common uses of acetic acid:Acetic acid is used as coagulant in the manufacture of rubber.It is used in the manufacture of various dye stuffs and perfumes.It is used in the manufacture of rayon fibre.It is used as a solvent.Learning OutcomesStudents understand the chemical properties of acetic acid after this experiment.Students acquire skills to perform & visualize the reaction of acetic acid with the following.WaterLitmus paperSodium bicarbonateStudents will be able to properly use glassware like thistle funnel, delivery tubes, etc., in the real lab.Based on acquired skills, the student will be able to analyze a given sample & recognize it as acetic acid.
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