) A mixture of CaCl2, and NaCl weighing 4 44 g is treated with sodium carbonate solution to precipitate all - Chemistry - Some Basic Concepts of Chemistry

Question

) A mixture of CaCl2, and NaCl weighing 4 44 g is treated with
sodium carbonate solution to precipitate all the calcium ions as
calcium carbonate The calcium carbonate so obtained is heated
strongly to get 0 56 g of CaO The percentage of NaCl in the mixture
is [Atomic mass of Ca = 40]

Dolly Tanwar · Answer

W(cacl2)+W(nacl)=4 44g cacl2+na2co3 -caco3+2nacl 111g of cacl2
reacts with 106g of na2co3 to give 100g of caco3 106g ofCaco3 on
heating gives 56g of caO 0 56g ofcaO is obtained from 1g of caco3
111g of cacl2 gives 100g of caco3 1g of caco3 is given by 1 11 g of
cacl2 1 11g+W(nacl)=4 44g w(nacl)=3 33g

) A mixture of CaCl2, and NaCl weighing 4.44 g is treated with sodium carbonate solution to precipitate all the calcium ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture is [Atomic mass of Ca = 40]