Calcium carbide is a very useful chemical in industrial applications and domestic uses. We can prepare acetylene gas by the production of calcium carbide. In this lesson we discuss about preparation of calcium carbide and acetylene gas and then their uses in chemical industry and domestic purposes.
Steps of production, reactions and physical conditions are discussed in this section.
Calcium carbonate is heated into higher temperature and take calcium oxide (CaO). CaCO3 decomposes into
CaO and CO2 above 8250C.
Produced CaO and coke are heated at temperature around 20000C in an electric arc furnace. Calcium carbide and
carbon monoxide are produced in this step.
Add calcium carbide into water. You can see a smoke is coming out of water. This smoke is the acetylene gas which is highly flammable. Acetylene's IUPAC name is ethyne. Which is an organic compound and belongs to alkyne group.
Acetylene gas is an organic compound and belongs to alkyne group.
Following figure shows, how CaC2 and acetylene gas is manufactured by starting from raw materials and what are the physical conditions you should maintain to get higher yield.
Carbide compounds can be prepared from strontium and barium metals too.
Calcium cyanamide(CaNCN) is a fertilizer. Calcium carbide is heated with nitrogen gas stream in 10000C to manufacture calcium cyanamide.
Calcium carbide plant causes to environmental pollution.
Calcium carbide is a prohibitted compound to rippen foods in most countries.
Pure calcium carbide is colourless. But pieces of technical-grade calcium carbide are grey or brown colour because existing of calcium oxide, calcium phosphate, calcium sulfide, calcium nitride and silicon carbide.
Ethyne is the IUPAC name of acetylene. Add water to calcium carbide. It gives ethyne gas which has two carbon atoms and two hydrogen atoms.
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