Chemistry
What do you observe when barium chloride solution is mixed with sodium sulphate solution ?
What difference is observed in the mass of reactants and products in the above reaction ?
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Answer
When barium chloride solution is mixed with sodium sulphate solution, a white insoluble precipitate of barium sulphate is formed along with a solution of sodium chloride.
BaCl2 + Na2SO4 ā¶ 2NaCl + BaSO4ā
On weighing the apparatus before and after the reactions it is found that:
Total mass of the apparatus + reactants = Total mass of the apparatus + products
Hence, in a chemical reaction, the total mass of the reactants is equal to the total mass of the products. This observation verifies the law of conservation of mass.
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