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Question

The product obtained as a result of a reaction of nitrogen with CaC2 is


A

CaCN

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B

CaCN3

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C

Ca2CN

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D

CaCN2

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Solution

The correct option is D

CaCN2


When nitrogen is made to react with calcium carbide at 1000ºC - 1100ºC temperature, a mixture of calcium cynamide and black-coloured carbon is produced. This mixture is called nitrolim. It is used as an inorganic nitrogen-containing fertilizer.

N2+CaC2ΔCa[NCN]+C

On hydrolysis, it releases ammonia that could be used by plants (nitrogen fixation via a chemical compound):

CaCN2+3H2O2NH3+CaCO3


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