Question

A sample of ammonium nitrate when heated yields 8.96 litres of steam (measured at stp.) 

NH₄ NO₃ → N₂O + 2H₂O 

1. What volume of dinitrogen oxide is produced at the same time as 8.96 litres of steam. 

2. What mass of ammonium nitrate should be heated to produce 8.96 litres of steam (Relative molecular mass of NH₄NO₃ is 80)

Answer 1

[ ∴ 1vol of N₂O is produced at the same time as 2 vol. of steam]

(ii) 2 x 22.4 L steam at S.T.P is produced from NH₄NO₃ = 80 g

(iii) Percentage of oxygen in NH₄NO₃ = 16 x 3 = 60%