Question

What happens when dinitrogen is passed over calcium carbide at 1300 K?

Answer 1

When dinitrogen is passed over calcium carbide (CaC₂) at 1300 K, it reacts with calcium carbide. This reaction produces calcium cyanamide (CaCN₂) and carbon. Calcium cyanamide is an important fertilizer.

The reaction is:

\[\ce{N2 + CaC2 -> CaCN2 + C}\]

This process occurs at high temperature (1300 K).