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1.

write a balanced chemical equation to represent and aqua sodium hydroxide solution that is added to a copper sulphate solution forms a bluish white precipitate of copper hydroxide​

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Answer :-

It is given that aqueous SODIUM HYDROXIDE (NaOH) solution is added to copper sulphate solution (CuSO₄) , and forms a bluish white precipitate i.e. Copper Hydroxide [Cu(OH)₂] .

Another product, which is formed in this REACTION is aqueous solution of Sodium Sulphate (Na₂SO₄) .

NaOH + CuSO₄ → Cu(OH)₂ + Na₂SO₄

[skeletal equation]

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On observing the above equation carefully, we will understand that the equation will be balanced if we multiply "NaOH" on the REACTANT side with 2 .

2NaOH + CuSO Cu(OH) + Na₂SO₄

[balanced equation] .

The obtained balanced equation will be more informative if we add "symbols of physical states" of the reactants and the products. So, here we write it :-

2NaOH (AQ) + CuSO (aq) Cu(OH) (s) + NaSO (aq)



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