STANDARD Chemistry Limiting Reagents MCQ Question
If 40 g of CaCO₃ is treated with 40 g of HCl, which of the reactants will act as limiting reagent?
CaCO₃
HCl
Both (a) and (b)
None of these.
Correct Answer
Detailed Explanation
CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂. 100 g of CaCO₃ reacts with 73 g of HCl. 40 g of CaCO₃ will react with 29.2 g of HCl. Since, CaCO₃ is completely consumed and some amount of HCl remains unreacted, CaCO₃ is the limiting reagent.
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