Question

Nitrolim is a mixture of:

• A. ${\mathrm{CaCN}}_2+{\mathrm{N}}_2$
• B. ${\mathrm{CaCN}}_2+\mathrm{graphite}$
• C. ${\mathrm{CaCN}}_2+\mathrm{diamond}$
• D. ${\mathrm{CaC}}_2+\hspace{0.17em}\mathrm{graphite}$

Answer 1

The correct option is B

${\mathrm{CaCN}}_2+\mathrm{graphite}$

The correct option is (B):-

The explanation for the correct answer:

Calcium cyanamide:

1. Nitrolim is basically the chemical compound which is also known as calcium cyanamide, having the chemical formula as ${\mathrm{CaCN}}_2$.
2. So, when nitrogen is passed over the calcium carbide at a very high temperature, there will be the production of Nitrolim.
3. The reaction is: $\underset{\mathrm{Calcium}\mathrm{carbide}}{{\mathrm{CaC}}_2\left(\mathrm{s}\right)}+\underset{\mathrm{Nitrogen}}{{\mathrm{N}}_2\left(\mathrm{g}\right)}\stackrel{∆}{\to }\underset{\mathrm{Calcium}\mathrm{cyanamide}}{{\mathrm{CaNCN}}_{}\left(\mathrm{s}\right)}+\underset{\mathrm{Carbon}}{\mathrm{C}\left(\mathrm{s}\right)}$
4. It is also commercially known as lime nitrogen.

Therefore, the correct answer is (B):- ${\mathrm{CaCN}}_2+\mathrm{graphite}$