A 14.585 g sample of CaCl2 was added to 12.283 g of K2CO3 and mixed in water. A 3.573 g yield of CaCO3 was obtained., Limiting reagent is K2CO3,percent yield of CaCO3 = 40.20 %
molar mass of CaCO3 = 100.0869 g/mol ,then 0.0888 mole = 0.0888 \times 100.0869 = 8.8877 gm. 8.8877 of CaCO3 is theoritical yield = 100% yield then 3.573 gm =3.573 \times 100 /8.8877 = 40.20 %,percent yield of CaCO3 = 40.20 %. Limiting reagents are drugs that are totally engulfed when a chemical reaction is completed. They are also recognised as limiting reactants or limiting agents. A set sum of reagents is needed for the finalisation of a chemical reaction, according to stoichiometry. Excess reagents are limiting reactant that aren't absorbed when a chemical reaction is finished. The limiting reagent is the reactant that has totally used up or responded since its quantity restricts the number of products formed.
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