Consider the following substances :
NaCl , Ca(OH)2, NaHCO3, NH3, Na2CO3, H2O, Cl2, CO2, CaSO4.2H2O, 2CaSO4.H2O, CaOCl2
(a) Which two substances combine to form bleaching powder?
(b) Which four substances are utilised in the production of washing soda?
(c) Which compound represents plaster of Paris?
(d) Which compound is a part of baking powder?
(e) Which compound is used as an antacid?
(a) Ca(OH)2 and Cl2 combine to form bleaching powder.
(b) NaCl, NH3, H2O, and CO2 are utilised in the production of washing soda.
(c) 2CaSO4.H2O represents plaster of pairs as its formula is CaSO4.1/2H2O
(d) NaHCO3 is a part of baking powder. As the baking powder is a mixture of tartaric acid and NaHCO3
(e) NaHCO3 is used as an antacid as it is alkaline in nature and neutralises excessive acid produced in the stomach.
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