why does excess copper sulphate separate out as crystals on cooling the hot solution of copper sulphate
Answers
Answer:
The saturated solution of copper sulfate is prepared by dissolving a considerate amount of copper (II) sulfate into hot water. The mixture is stirred continuously until the saturated solution is obtained.
A saturated solution contains the maximum concentration of the substance, and if the further amount of substance is added at a constant temperature, it remains undissolved.
Therefore when the saturated solution of copper sulfate is cooled down the excess amount of copper sulfate precipitates out as crystals. In this way, the remaining solution becomes more concentrated and forms crystals of copper sulfate.
Answer:
Because heated water molecules move further apart, making space for more solid substances to dissolve. As this solution cools, water molecules move closer together and there is less space for the solution to hold on to do much of the dissolved solid