100 g NH₄Cl and 100 g Ca(OH)₂ are heated: 2NH₄Cl + Ca(OH)₂ → CaCl₂ + 2NH₃ + 2H₂O Which is the limiting reagent?

Verified Answer & Explanation⌄

Correct Answer: A) NH₄Cl

Concept Explanation

Moles of NH₄Cl ≈ 100/53.5 = 1.87 mol. Moles of Ca(OH)₂ ≈ 100/74 = 1.35 mol. 1.35 mol Ca(OH)₂ requires 2.70 mol NH₄Cl, but only 1.87 mol is available. Therefore, NH₄Cl is the limiting reagent.

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