What do you understand by the statement, that the "solubility of copper sulphate is 14.3 g/100 g of water at 0°C'?
“Solubility of copper sulphate(CuSO4) is 14.3 g/100 g of water at 0°C” which means 14.3g of copper sulphate is dissolved in 100g of water.
Here, Copper sulphate will act as solute and water will act as a solvent