Question

Copy and complete the following equations:

1. \[\ce{AlN + H2O ->}\]
2. \[\ce{2NH3 + 3PbO ->}\]
3. \[\ce{NH3 + 3Cl2 ->}\]
4. \[\ce{NH3 + CO2 ->}\]

1. 1. Which property of ammonia is illustrated by equation (c)?
   2. What important fertiliser is prepared from equation (d)? State the conditions.

Answer 1

1. \[\ce{AlN + 3H2O -> Al(OH)3 + NH3 ^}\]
2. \[\ce{2NH3 + 3PbO -> 3Pb + 3H2O + N2}\]
3. When ammonia is in excess,
   \[\ce{2NH3 + 3Cl2 -> N2 + 6HCl}\]
   \[\ce{6NH3 + 6HCl -> 6NH4Cl}\]
   \[\ce{8NH3 + 3Cl2 -> N2 + 6NH4Cl}\]
   When chlorine is in excess,
   \[\ce{NH3 + 3Cl2 -> 3HCl + NCl3}\]
4. \[\ce{2NH3 + CO2 -> NH2CONH2 + H2O}\]
   
   1. Ammonia acts as a reducing agent, as explained by equation (c).
   2. Urea, the nitrogenous fertiliser, is prepared from equation (d).
      Conditions for urea preparation: High pressure (140 – 200 atm) and high temperature (170 – 190°C).