Qno.4:Acids,Bases,and Salts
You are given three unlabelled bottles A, B and C, containing colourless solutions, such that one of them is acid, the other being basic and neutral.How will you distinguish between them by using china rose as an indicator.
Answers
Explanation:
Acids: The substance which has sour taste and acidic properties is known as acid.
Acidic Substances; The substances which have sour taste are called acidic substances.
Acidus/ Acere: The term acid has been derived from the Latin word Acidus or Acere.
Natural Acids: The acids which are found in plants and animals are commonly called natural acids or organic acids.
Mineral Acids: The acids which are prepared from non-living things like the minerals of the Earth by chemical means are called mineral acids.
Bases: The substances which have a bitter taste and soapy ( slippery) touch are known as bases. The nature of bases is basic.
Indicators: The special types of substances, which change their colour when come in contact with acidic or basic substances are called indicators. These are used to test whether a substance is acidic or basic.
Neutral substances: The substances which are neither acid, nor basic and do not affect indicators are called neutral substances. Ex. Distilled water
Acid Rain: Rain containing traces of mineral acids, such as Hydrochloric Acid (HCl), Nitric Acid ( HNO3) is called acid rain.
Neutralisation: The process due to which an acid completely reacts with a base with the evolution of heat to form salt and water as the products is called Neutralisation. It is the reaction between an acid and a base producing salt and water with the evolution of heat.
Salt: A new substance obtained by neutralization of an acid with a base is called salt.Salt may be acidic, basic or neutral in nature.