Question

A 10.0 g sample of a mixture of calcium chloride and sodium chloride is treated with na2co3 solution. This calcium carbonate is heated to convert all the calcium to calcium oxide and the final mass of calcium oxide is 1.62 g. The percentage by mass of calcium chloride in the original mixture is :

Answer 1

Answer:

10 g of sample of mixture of Cacl2 and Nacl is treated to precipitate alll the calcium as CaCo3. this CaCo3 is heated to convert all the Ca to Cao and the final mass of CaO is 1.62g. the precent by mass of Cacl2 in the original mixture.