How do you calculate the theoretical yield of CaO in moles when 0.322 grams of CaCO3 is reacted with 33.6 mL of 1.05 M HCl?
mass of CaCO3 = 0.322 g
moles of CaCO3 = 0.322 / 100 = 3.22 x 10^-4 mol
moles of HCl = 33.6 x 1.05 / 1000 = 0.03528 mol
CaCO3 + 2 HCl --------------> CaCl2 + H2O + CO2
1 2 1
3.22 x 10^-4 0.03528 ??
here limiting reagent is CaCO3.
moles of CaCl2 formed = 3.22 x 10^-4
mass of CaCl2 formed = 3.22 x 10^-4 x 110.984
= 0.0357 g
theoretical yield = 0.0357 g
Note : here you gave CaO . but the reaction between CaCO3 and HCl yield CaCl2 and H2O and CO2. so i calculated for CaCl2.
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