What happens if you put copper sulphate crystals in water?

No colour change

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Colour changes to blue

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Colour changes to red

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Colour changes to yellow

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Solution

The correct option is B
Colour changes to blue

When pure copper sulphate is kept in water it starts to dissolve and in this process, a small amount of heat energy is released during the dissolution. It’s colour changes to blue because 5 molecules of water get attached to it. These molecules are referred to as the water of crystallisation. Due to this, it gets a peculiar blue colour

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Similar questions

When iron fillings are added to a blue coloured copper sulphate solution, what colour change would you observe in solution?

When iron reacts with copper sulphate, the colour of the solution changes from blue to ___.

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