From the balanced equation, 8 moles of ammonia are formed when 4 moles of nitrogen react.
N₂ + 3H₂ ⇒ 2NH₃
That's the balanced equation in the question. A mole in a chemical equation is usually denoted by the coefficient of each substance. From the equation, one mole of Nitrogen reacted with three moles of hydrogen to produce 2 moles of ammonia. Using this information, we can produce a mole ratio. A mole ratio is the ratio of the number of moles of one reactant required to completely react with another reactant or the ratio of the number of moles of one product produced to another product.
The mole ratio in the above equation is
1 : 3 : 2
To easily find how many moles of ammonia are formed when 4 moles of nitrogen react:
1 mole of Nitrogen = 2 moles of ammonia
4 moles of nitrogen = x moles of ammonia
Therefore, x = 4 x 2/1 = 8 moles of ammonia.
Thus, 8 moles of ammonia are formed when 4 moles of nitrogen react.
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