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Question
Write down the changes that will be seen in the instance and explain the reason behind them.
50 ml water is added to 50 ml solution of copper sulphate.
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Solution
When 50 mL of water is added to a 50 mL solution of copper sulphate, a reversible reaction occurs, and the colour changes from pale blue to white and then back to blue when water is added again.
\[\ce{CuSO4 + H2O <-> CuSO4 * 5H2O}\] (BLUE VITRIOL).
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