Question

A mixture of calcium chloride and magnesium chloride weighing 2.000g was mixed with sulfuric acid until no more calcium sulfate precipitated. The precipitate after drying and weighing had a mass of 0.736g.

a) Find the moles of calcium ion.

Answer 1

Moles of calcuim ions=$\dfrac{2-0.736}{40}=\dfrac{1.264}{40}=0.0316$