t ACME Chemical Industries they react the Ca(OH)2 with ammonium chloride according to the following
balanced reaction:
Ca(OH)2(s) + 2NH4Cl(aq) → 2NH3(g) + CaCl2(aq) + 2H2O(l)
Given that purity of the Ca(OH)2 being used was 76.82%, and the reaction yield was 89.67%
2.1 Determine the concentration of CaCl2 salt (in mol/liter) that could be theoretically obtained, if the full-
scale plant processes 753000000. X 10-7 Mg of Ca(OH)2 a month and the volume of the final solution is
3.70 X 107 â„“ . [8]
2.2 Give two possible reasons why the Ca(OH)2 precipitated was not pure? [2]
