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3 February, 04:20

In the reaction between copper sulphate solution and sodium sulphide solution, 15.9 g copper sulphate completely reacts with 7.8 g of sodium sulphide. It is observed that 9.5 g of copper sulphide is formed. What is the mass of sodium sulphate solution formed?

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  1. 3 February, 06:20
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    The mass of formed sodium sulphate solution is 14.2 g.

    Explanation:

    From the given,

    Mass of copper sulphate = 15.9 g

    Mass of sodium sulphide = 7.8 g

    Total mass of reactant = Mass of copper sulphate + Mass of sodium sulphide

    = 15.9 + 7.8g = 23.7g

    Mass of copper sulphide formed = 9.5 g

    Mass of sodium sulphate = Total mass - Mass of copper sulphide

    = 23.7 g - 9.5 g = 14.2 g

    Therefore, The mass of formed sodium sulphate solution is 14.2 g.
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