10 g of sample of mixture of CaCl_(2) and NaCl are treated to precipitate all the calcium as CaCO_(3). This CaCO_(3) is heated to convert all the Ca to CaO and the final mass of CaCl_(2) in the original mixture is

10 g of sample of mixture of CaCl_(2) and NaCl are treated to precipit

1.	10 g of sample of mixture of CaCl_(2) and NaCl are treated to precipitate all the calcium as CaCO_(3). This CaCO_(3) is heated to convert all the Ca to CaO and the final mass of CaCl_(2) in the original mixture is
Answer» 0.321 0.162 0.218 0.12 Solution :a) `CaCl_(2) + NaCl = 10g` Let, weight of `CaCl_(2)` = XG `CaCl_(2) to CaCO_(3) to CaO` Moleof CaO = `(1.62)/(56) rArr x/111 = 1.62/56 x = 3.21g` `%` of `CaCl_(2)` = (3.21/10 x 100) = 32.1%`