A student performed the experiment "Stoichiometry of a

Last updated: 7/28/2022

A student performed the experiment "Stoichiometry of a Precipitation Reaction" and obtained 120% yield of CaCO3. What is a possible explanation? Na2CO3 + CaCl2.2H2O--->CaCO3 + 2 NaCl + 2 H2O The student carried out the experiment carefully and accurately and thus obtained a high yield. The student unknowingly used CaCl2.9H2O instead of CaCl2.2H2O called for in the procedure. The precipitate CaCO3 was not completely dry when its weight was recorded. All of the above