Give mehod of preparation of ethyne from calcium carbonate or calcium

1.	Give mehod of preparation of ethyne from calcium carbonate or calcium carbide.
Answer» SOLUTION :(i) Quick lime can be OBTAINED by heating limstone as shown in the following reactions : `underset("Limestone")(CaCO_(3(s))) overset(Delta)rarr underset("Lime")(CaO_((s))) + CO_(2(g))` (ii) Now heating calcium oxide with COKE, calcium carbide and carbon monoxide are obtained. `underset("Quick lime")(CaO) + 3C underset(Delta)overset("Closed furnace")rarr underset("Calcium carbide")(CaC_(2)) + CO` (iii) By REACTION of calcium carbide with water, ETHYNE is obtained as follows. `underset("carbide")underset("Calcium")(CaC_(2))+underset("Water")(2H_(2)O)rarr underset("hydroxide")underset("Calcium")(Ca(OH)_(2)) + underset("Ethyne")(C_(2)H_(2))` By this way ethyne is produced in industries.

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