Question

Name the nitrate:

Gives two gases and leaves no residue.

Answer 1

1. Ammonium nitrate($\mathit{N}{\mathit{H}}_{\mathbf{4}}\mathit{N}{\mathit{O}}_{\mathbf{3}}$) upon heating forms a gas Nitrous oxide(${\mathit{N}}_{\mathbf{2}}\mathit{O}$) and water vapor, and no residue is left behind after the decomposition of Ammonium Nitrate.
2. The reaction is, $\underset{Ammoniumnitrate}{N{H}_{4}N{O}_3\left(s\right)}\stackrel{∆}{\to }\underset{Nitrousoxide}{N_{2}O\left(g\right)}+H_{2}O\left(l\right)$.
3. So, the nitrate is Ammonium nitrate.