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When 15g of copper sulphate react with 1...

When 15g of copper sulphate react with 15 g of sodium hydroxide, 20g of sodium suphate along with copper hydroxide is formed .What is the mass of copper hydroxide formed?

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The chemical reation taking place is:
Copper sulphate + soldium hydroxide `rarr` sodium suphate + copper hydroxide
(15g) (15g) (20g) (x)
On the basis law of conservation of mass:
Mass of copper hydroxide (x) =(15g +15g) -(20g) =10g
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