Question

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(a) State the law of conservation of mass.
(b) What do you observe when barium chloride
solution is mixed with sodium sulphate
solution ?​

Answer 1

( a ) The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

( b ) On mixing a solution of barium chloride with sodium sulphate, a white precipitate of barium sulphate is immediately formed. These reactions are ionic in nature. The reactants changes into ions when dissolved in water and there is an exchange of ions in solution.

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Answer 2

Explanation:

A)law of conservation of mass state that mass can neither be created nor be destroyed by chemical reaction

B)while mixing barium chloride with sodium sulphate, a white precipitate of barium sulphate is formed. These reactions are ionic in nature.

Bacl2 + Na2so4 ----------> Baso4 + Nacl

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