% of N a C l \ce{NaCl}

Chemistry Level pending

A mixture of C a C l X 2 \ce{CaCl_2} and N a C l X 2 \ce{NaCl_2} of mass 4.44 g 4.44\text{ g} is treated with N a X 2 C O X 3 \ce{Na_2CO_3} solution to precipitate all C a X 2 + \ce{Ca^{2+}} ions to C a C O 3 . C a C O 3 CaCO_3. CaCO_3 so obtained is heated strongly to get 0.56 g 0.56\text{ g} of C a O \ce{CaO} . The % of N a C l X 2 \ce{NaCl_2} in the mixture(at mass of Ca=40)

69.4 30.6 75 25

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