write all chemical properties of acid with example
Answers
Explanation:
Chemical properties of acids:
Acids react with reactive metals. Acid + metal → salt + hydrogen. Copper and silver do not react with dilute acid.
Acids react with bases. Acid + base → salt + water.
Acids react with carbonates. Acid + carbonate → salt + water + carbon dioxide.
Aim: To study the chemical reactions of acids.
Materials: 2 mol dm-3 hydrochloric acid, 2 mol dm-3 ethanoic acid, magnesium, copper(II) carbonate, iron(III) oxide, limewater, wooden splint and filter paper.
Apparatus: Test tubes, delivery tube, spatula, test tube holder, Bunsen burner, stopper, evaporating dish and filter funnel.
Safety measure: Acids are corrosive. Wear safety glasses.
A. Reactions of acids with bases
Procedure:
About 5 cm3 of dilute hydrochloric acid is poured into a test tube.
The acid is warmed using a gentle flame.
Iron(III) oxide powder is added bit by bit with stirring to the hot acid.
Any change that occurs is observed and recorded.
The unreacted iron(III) oxide is removed by filtration.
The filtrate is evaporated in an evaporating dish until one-third of the original volume remains.
The hot solution is allowed to cool for crystals to form.
The crystals formed are removed by filtration and dried by pressing the crystals between sheets of filter paper.
The features of the crystals are noted and recorded.
Steps 1 to 9 are repeated using dilute ethanoic acid to replace dilute hydrochloric acid.
Answer: