What is the concentration of copper sulphate (in mol L-1), if 80 g of it is dissolved in enough water to make a final volume of 3 L?

  1. A

    0.0167

  2. B

    0.167

  3. C

    1.067

  4. D

    10.67

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    Solution:

    Molar mass of CuSO4 = 63.5 + 32 + 64 = 159.5
    Moles of CuSO4 =80159.5=0.50
    Volume of solution = 3 L
    Molarity =  Moles of solute  Volume of solution in L=0.503=0.167 mol L1

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