if 20 g CaCO3 is a added to 20 gram HCl select the true statement.
Correct answer: A. CaCO3 is the limiting reagent
- A. CaCO3 is the limiting reagent
- B. Both reactants are consumed completely
- C. HCl is the limiting reagent
- D. There is no reaction
Explanation
The equation for the reaction isCaCO3 + 2HCl → CO2 + H2O + CaCl2Mr of HCl= 1 + 35.5 = 36.5Mr of CaCO3= 40 + 12 + (3x16) = 1002x36.5g of HCl => 1 mole of CaCl220g of HCl => x mole of CaCl2x= 0.27mol100g of CaCO3 => 1 mole of CaCl220g of CaCO3 => x mole of CaCl2x= 0.2mol As lesser moles of CaCl2 (product) is produced by CaCO3 hence it is the limiting reactant.
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