Question

In the reaction
4NH₃(g) + 5O₂ (g)→4NO(g) + 6H₂O(l) ,when 1 mole
of ammonia and 1 mole of O₂ are made to react to completion
(a) 1.0 mole of H₂O is produced
(b) 1.0 mole of NO will be produced
(c) all the ammonia will be consumed
(d) all the oxygen will be consumed

Answer 1

1 mole of ammonia and 1 mole of O₂ are react to give 1.0 mole of NO

Explanation:

Ammonia reacts with oxygen to produce Nitric oxide and water

$4 \mathrm{NH}_{3}+5 \mathrm{O}_{2} \rightarrow 4 \mathrm{NO}+6 \mathrm{H}_{2} \mathrm{O}$

This is the balanced equation of the given reaction.

From the reaction it is observed that 4 moles of ammonia and 5 moles of oxygen react to give  4 moles of nitric oxide and six moles of water.

If the reaction is made to write for the 1 mole of ammonia and one mole of oxygen.

$1 \mathrm{NH}_{3}+1.25 \mathrm{O}_{2} \rightarrow 1 \mathrm{NO}+1.5 \mathrm{H}_{2} \mathrm{O}$

Therefore, 1 mole of ammonia and 1 mole of O₂ are react to give 1.0 mole of NO.

Therefore, the correct answer is option (b)