Q.

Identify the correct statement according to the law of conservation of mass when barium chloride reacts with sodium sulphate to give barium sulphate and sodium chloride.

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a

The total mass of reactants, barium chloride, and sodium sulfate taken is greater than the total mass of the products, barium sulfate and sodium chloride.

b

The total mass of reactants, barium chloride, and sodium sulfate taken is less than the total mass of the products, barium sulfate and sodium chloride
 

c

The total mass of the reactants barium chloride and sodium sulphate is equal to the total mass of the products barium sulphate and sodium chloride. 

d

The total mass of reactants may be greater or may be smaller than products.

answer is C.

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Detailed Solution

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According to the law of conservation of mass, the total mass of the products is equal to the total mass of the reactants. Hence, the correct statement according to the law of conservation of mass is- "The total mass of the reactants barium chloride and sodium sulphate is equal to the total mass of the products barium sulphate and sodium chloride."

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