Answer to Question #251911 in General Chemistry for BOB

Question

Consider the following balanced equation.

4 NH₃ + 5 O₂  4 NO + 6 H₂O

How many moles of O₂ are required to react with 6.9 moles of NH₃?

Answer 1

solution

4NH3+5O2→4NO+2O  

5 moles of oxygen required to react with a mole of ammonia

Thus x mole of oxygen will react with (6.9/ 17) mole of ammonia

x={(5×6.9)/ (4×17)}

​=0.5

Hence, the number moles of O2

​ required is 0.5 mol.