What is observed when a solution of sodium sulphate is added to a solution of barium chloride taken in a test tube? Write equation for the chemical reaction involved and name the type of reaction in this case.
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Solution
These two solutions react to form a white insoluble precipitate.
BaCl2+Na2SO4→2NaCl+BaSO4↓
This is a double displacement reaction as the two compounds exchange their ions to form two different compounds.