Question

Write the chemical reaction and observation:

(ⅰ ) Ammonia is burnt in pure Oxygen?

(ⅱ) Ammonia is passed through Copper sulphate solution in excess?

(ⅱⅰ) Ammonium hydroxide is added to Ferric chloride solution?

Answer 1

Reactions of Ammonia and Ammonium hydroxide

(ⅰ ) Ammonia burns with Oxygen to give water and Nitrogen

$$\begin{gathered} 4{\mathrm{NH}}_3\left(\mathrm{g}\right)+3{\mathrm{O}}_2\left(\mathrm{g}\right)\to 2{\mathrm{N}}_2\left(\mathrm{g}\right)+6{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right) \\ \left(\mathrm{Ammonia}\right)\left(\mathrm{Oxygen}\right)\left(\mathrm{Nitrogen}\right)\left(\mathrm{water}\right) \end{gathered}$$

(ⅱ) Ammonia reacts with Copper sulphate and precipitates Copper hydroxide

$$\begin{gathered} {\mathrm{CuSO}}_4\left(\mathrm{aq}\right)+2{\mathrm{NH}}_3\left(\mathrm{g}\right)+2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\to \mathrm{Cu}{\left(\mathrm{OH}\right)}_2\left(\mathrm{aq}\right)+{\left({\mathrm{NH}}_4\right)}_2{\mathrm{SO}}_4\left(\mathrm{s}\right) \\ (\mathrm{Copper}\mathrm{sulphate})\left(\mathrm{Ammonia}\right)\left(\mathrm{Water}\right)(\mathrm{Copper}\mathrm{hydroxide})(\mathrm{Ammonium}\mathrm{sulphate}) \end{gathered}$$

(ⅱⅰ) When Ammonium hydroxide is added to solution of Ferric chloride, then it results in formation of Ferric hydroxide and Ammonium chloride

$$\begin{gathered} 6{\mathrm{NH}}_4\mathrm{OH}\left(\mathrm{aq}\right)+2{\mathrm{FeCl}}_3\left(\mathrm{s}\right)\to 2\mathrm{Fe}{\left(\mathrm{OH}\right)}_3\left(\mathrm{aq}\right)+6{\mathrm{NH}}_4\mathrm{Cl}\left(\mathrm{s}\right) \\ (\mathrm{Ammonium}\mathrm{hydroxide})(\mathrm{Ferric}\mathrm{chloride})(\mathrm{Ferric}\mathrm{hydroxide})(\mathrm{Ammonium}\mathrm{chloride}) \end{gathered}$$

So here Ammonia reacts with Oxygen to form Nitrogen, Ammonia with Copper sulphate give Copper hydroxide and Ammonium hydroxide with Ferric chloride form Ferric hydroxide.