Question

The synthesis of nitrogen trihydride from nitrogen gas and hydrogen gas is shown by which balanced chemical equation?

A) N2(g) + H2(g) → NH3(g)
B) N2(g) + 3H2(g) → 2NH3(g)
C) 2NH3(g) + 3H2(g) → N2(g)
D) 2NH3(g) → N2(g) + 3H2(g)

Answer 1

The correct answer is: [B]:
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" N₂ (g) + 3 H₂ (g) → 2 NH₃ (g) " .
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Note of interest:
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This particular reaction is known as the "Haber process" .
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Answer 2

Hello!

The synthesis of nitrogen trihydride from nitrogen gas and hydrogen gas is shown by the following balanced chemical equation:

B) N₂(g) + 3H₂(g) → 2NH₃(g)

Why?

The question is saying that the reactants are nitrogen gas (N₂) and hydrogen gas (H₂). This rules out options C and D, because they do not have those reactants.

The remaining options (A and B) show the formation of Nitrogen Trihydride (NH₃, also called Ammonia), from Nitrogen gas and Hydrogen gas, but option A is not balanced (the number of each atom on both sides of the equation is not the same).

So, the correct option is B, it shows the balanced reaction accurately. This reaction is also known as the "Haber-Bosch Process", invented by Fritz Haber and Carl Bosch in the early 20th century.

Have a nice day!