Nitrogen and hydrogen react to form ammonia. Consider the mixture of N2 (blue spheres) and H2 (gray spheres) in the illustration. Which statement concerning the reaction is MOST accurate?

Respuesta :

The illustration is attached below and Options are as follow,

A)  Nitrogen is in excess.
B)  Hydrogen is in excess.
C)  This is a synthesis reaction.
D)  Hydrogen is the limiting reactant.

Answer:
            Option-D (Hydrogen is the limiting reactant).

Explanation:

The equation of reaction is as follow,

                                   N
₂  +  3 H₂    →     3 NH₂

According to this equation 1 mole of nitrogen reacts with 3 moles of hydrogen gas to produce 3 moles of ammonia.

In given illustration 4 moles of N₂ (blue spheres) are present and 6 moles of H₂ are present.
As,
                         1 mole of N₂ requires  =  3 moles of H₂
So,
                   4 moles of N₂ will require  =  X moles of H₂

Solving for X,
                     X  =  (4 mol × 3 mol) ÷ 1 mol

                     X  =  12 mol

Hence, 4 moles of N₂ requires 12 moles of H₂, but we are provided by 6 moles of H₂. Therefore, H₂ is a limiting reagent and will be consumed first.
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