Q:- 6 Do as directed.
(1) Blue coloured solution is given in the figure. Which solution is it? What causes the
colour change in this solution. Explain.
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Answer:
blue coloured solution is copper sulphate
Blue colour of the copper sulphate solution changes into green colour & then iron nail acquires a brownish look. This is because that iron is more reactive than copper.
The following chemical reaction takes place in this activity.
Fe+CuSO4 →FeSO4 +Cu
In this reaction, iron displaces copper from CuSO4 solution.
Explanation:
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