45 g of copper sulfate was mixed with 450 ml of water. Calculate the mass fraction of vitriol in solution.

The mass of the solution after the complete dissolution of copper sulfate in water. Knowing that the density of water is 1.000, then the volume and mass will be equal.
m (solution) = m (CuSO4) + m (H2O) = 45 g + 450 g = 495 g.
Determine the mass fraction of salt in the resulting solution.
W (CuSO4) = m (CuSO4) / m (solution) • 100% = 45 g / 495 g • 100% = 9.09%.



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