Concept:The coefficients of a balanced chemical equation dictate the strict stoichiometric proportionality between reactants and products.
Formula:$$ \frac{\text{Moles of N}_2}{\text{Coefficient of N}_2} = \frac{\text{Moles of NH}_3}{\text{Coefficient of NH}_3} $$
Solution:- The balanced equation (Haber Process) shows that 1 mole of Nitrogen gas produces 2 moles of Ammonia. (A 1:2 ratio).
- We want to manufacture 8 moles of Ammonia.
- Set up the ratio: \( \frac{1}{2} = \frac{x}{8} \).
- Multiply both sides by 8: \( x = 8 / 2 = 4 \).
- Therefore, exactly 4 moles of Nitrogen are required.
Why other options are incorrect:- 2.5, 3.5, 5 moles: These are random distractors that do not follow the strict 1:2 molar relationship dictated by the balanced equation.
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