WAEC - Chemistry (2001 - No. 11)
A mixture of calcium chloride and calcium trioxocarbonate (IV) in water can be separated by
evaporation
sublimation
distillation
filtration
Wyjaśnienie
To separate calcium chloride (CaCl2) and calcium carbonate (CaCO3) in water, you can add water to the mixture, filter it, and collect the CaCO3 on the filter paper.
The CaCl2 solution will pass through the filter paper, while the CaCO3 will be collected on the paper. This is possible because CaCO3 is insoluble in water, while CaCl2 is soluble. The correct answer is option D