Question

Complete and balance the following equations giving the conditions necessary for the reactions :

$\mathrm{Mg}+{\mathrm{N}}_2\stackrel{}{\to }------$

Answer 1

• Sometimes combustion or burning takes place in the absence of air.
• For example Magnesium($\mathrm{Mg}$) ribbon continues to burn in the atmosphere of nitrogen($\mathrm{N}$) (which is not a supporter of combustion)
• $\underset{\mathrm{magnesium}}{3\mathrm{Mg}\left(\mathrm{s}\right)}+\underset{\mathrm{nitrogen}}{{\mathrm{N}}_2\left(\mathrm{g}\right)}\stackrel{\mathrm{burn}}{\to }\underset{\mathrm{magnesium}\mathrm{nitride}}{{\mathrm{Mg}}_3{\mathrm{N}}_2\left(\mathrm{s}\right)}$