Dissolve the Barium Chloride in cold water, cold because the Calcium Sulfate is slightly soluble in water and the cold water will prevent it from being dissolved, then filter out the Calcium Sulfate.
Ammonium Chloride sublimes when heated whereas Barium Sulfate does not. Another method would be to add de-ionized water to the mixture. The solids left over will be the Barium Sulfate whereas the the...
Barium sulphate is insoluble in water so they're easily separated by simple filtration. Added: Prepare by adding together and let precipitate get coarse by boiling and cooling down Ba(OH)2 + H2SO4...
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