(b) What is meant by 'a family of salts' ? Explain with examples.
(c) What is meant by 'hydrated' and 'anhydrous' salts ? Explain with e
(1) Write the names, formulae and colours of any two hydrated salts.
(c) What will be the colour of litmus in an aqueous solution of ammon
Answers
Answer:
(a) A salt is a compound formed from an acid by the replacement of the hydrogen in the acid by a metal. Example: Sodium chloride - NaCl; It is obtained from hydrochloric acid and sodium metal.Ammonium chloride - NH4Cl; It is obtained from ammonia and hydrochloric acid.
(b) The salts having the same positive ions are said to belong to a family of salts. Example: Sodium chloride and sodium sulphate belong to the same family of salts called sodium salts.
(c) The salts which contain water of crystallisation are called hydrated salts. Example: Copper sulphate crystals contain 5 molecules of water of crystallisation. The salts which have lost their water of crystallisation are called anhydrous salts. Example: On strong heating, copper sulphate crystals lose all the water of crystallisation and form anhydrous copper sulphate.
(d) Copper sulphate pentahydrate salt - Its chemical formula is CuSO4.5H2O. It is blue in colour. Iron sulphate heptahydrate salt - Its chemical formula is FeSO4.7H2O. It is green in colour.
(e) The aqueous solution of ammonium chloride salt turns blue litmus red.
Explanation:
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Answer:
Explanation:
hydrated are the ones which have water and anhydrous is the one which has hidden water