Which statement about the reaction below is correct?K2SO4 + Ba(NO3)2 → BaSO4 + 2 KNO3Group of answer choicesBaSO4 will precipitate.KNO3 will precipitate.Both BaSO4 and KNO3 will precipitate.Neither BaSO4 nor KNO3 will precipitate.No reaction will occur because K2SO4 is insoluble.
Question
Which statement about the reaction below is correct?K2SO4 + Ba(NO3)2 → BaSO4 + 2 KNO3Group of answer choicesBaSO4 will precipitate.KNO3 will precipitate.Both BaSO4 and KNO3 will precipitate.Neither BaSO4 nor KNO3 will precipitate.No reaction will occur because K2SO4 is insoluble.
Solution
The correct statement about the reaction is "BaSO4 will precipitate."
Here's why:
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The reaction is a double displacement reaction where the ions in the reacting compounds exchange places.
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In the products, BaSO4 is formed. According to solubility rules, most sulfate salts are soluble, but barium sulfate is an exception. It is insoluble in water. Therefore, it will precipitate out of the solution.
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On the other hand, KNO3 is formed as the other product. Potassium nitrate is soluble in water, so it will not precipitate.
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Therefore, the correct statement is "BaSO4 will precipitate."
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