What is a salt? Give the names and formulae of any two salts. also name the acids and bases from which these salts may be obtained?
2. what is meant by hydrated and anhydrous salts. Give examples.
3. write the names, formulae and colours of any two hydrated salts.
Answers
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Common Name Chemical Name Formula
salt sodium chloride NaCl
salt substitute potassium chloride KCl
saltpeter potassium nitrate KNO3
slaked lime calcium hydroxide Ca(OH)2
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salt any chemical compound formed from the reaction of an acid with a base, with all or part of the hydrogen of the acid replaced by a metal or other cation.
Hydrated salt: A compound with one or more chemically combined water molecule. Example: Copper sulphate pentahydrate (CuSO4.5H2O) Anhydrous salt: A compound in which all water molecules are removed is called Anhydrous salt.
One of the most common examples is CuSO4.5H2O, or copper(II) sulfate pentahydrate. It’s blue in colour.
Another example is Glauber’s salt, or sodium sulfate decahydrate. It’s formula is Na2SO4.10H2O. It occurs as white or colourless crystals.
Answer:

Salts are ionic compounds that contain two groups of positively charged ions (H+) and negatively charged ions (OH-). In chemistry, salt is produced when acids and bases are combined together in equal proportions. Whereas naturally, salt is found in sea water. The process where acids and bases neutralize each other to form salt and water is known as neutralization. The chemical formula of common salt is NaCl. NaCl stands for Sodium Chloride. Salt has many uses. For e.g. salt is used for cooking, salt is used during the production of toothpaste, plastic, soaps, bleaches, etc. The pH of salt is 7 which means that it is neutral in nature i.e. it is neither acidic nor basic.