Question

To make a saturated solution72g of Copper sulphate is dissolved in 400g of water at 30C. Find its
concentration at the same temperature.

Answer 1

Answer:

1.125 mol/L or 1.125 M

Explanation:

density of water = 1 kg/L

volume of water =mass/density = 0.4L

molar mass of copper sulphate= 159.5 g/mol

no of moles off copper sulfate=given mass/molar mass=0.45 moles

concentration in molarity = mass of solute/volume of solution = 0.45/0.4

=1.125 mol/L

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