Question

Ammonia NH3 chemically reacts with oxygen gas O2 to produce nitric oxide NO and water H2O . What mass of nitric oxide is produced by the reaction of 1.3g of oxygen gas? Be sure your answer has the correct number of significant digits.

Answer 1

Sol :-

Balanced equation is :

4 NH₃............ +............. 5 O₂ -------------------------------> 4 NO..................... +............... 6 H₂O

4 mol...............................5 mol.........................................4 mol......................................6 mol

4x17g = 68 g.................5x32=160 g..........................4x30=120 g ...............................6x18=..108 g

From the balanced chemical equation, it is cleared that,

160 g of O₂ gives = 120 g of NO

So,

1.3 g of O₂ gives = 120 g x 1.3 g / 160 g of NO = 0.975 g = 0.98 g of NO