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Q.

In the above diagram, the paired open spheres represent H₂ molecules and the paired solid spheres represent N₂ molecules. When the molecules in the box react to form the maximum possible amount of ammonia (NH₃) molecules, what is the limiting reactant and how many molecules of NH₃ can be formed?

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a

H₂ is limiting. 12 molecules of NH₃ can be formed

b

N₂ is limiting. 5 molecules of NH₃ can be formed.

c

H₂ is limiting. 8 molecules of NH₃ can be formed

d

N₂ is limiting. 10 molecules of NH₃ can be formed

answer is C.

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Detailed Solution

$\begin{aligned} N_{2} + 3 H_{2} \to 2 {NH}_{3} \\ \begin{array}{ccc} 5 & 12 & - \\ (LR) & 8 \end{array} \end{aligned}$

In this reaction,

Molecules of NH₃ can be formed (2/3)12=8

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In the above diagram, the paired open spheres represent H2 molecules and the paired solid spheres represent N2 molecules. When the molecules in the box react to form the maximum possible amount of ammonia (NH3) molecules, what is the limiting reactant and how many molecules of NH3 can be formed?