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How would one separate solid barium sulfate from an aqueous solution?
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Barium sulfate is an inorganic salt that is completely insoluble in water. It is used as a radiocontrast agent in medical imaging tests since it absorbs x-rays better than human tissues. When mixed with water, barium sulfate forms a heterogeneous mixture since it doesn't dissolve. Specifically, the solid particles form a suspension in the water. The solid is easy to separate from the water a couple of different ways. You could put the mixture in a centrifuge. The solid would be pressed down to the bottom of the tube and the water could simply be poured off the top. You could also pass the suspension through a paper filter using vacuum suction pressure. The water will pass through the paper and the solid will be collected in the paper filter.
Posted by ncchemist on January 11, 2013 at 4:07 AM (Answer #1)
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