A student took a solution of copper sulphate in a beaker and put a clean iron nail into
it and left it for about an hour.
a)Write the observations of the student .
b)Identify the type of change taking place and explain why ?
c)Write the word equation for the change taking place.
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Answer: a) From the given statement, expected changes are given below:
i) Colour turns from blue to green.
ii) A brown colour is found to be deposited on iron nail surface.
b) Yes, the nature of these changes are chemical. The reason behind this is 'iron sulphate' and copper are produced in the reaction.
c) The reaction is:
Copper sulphate(Blue)+Iron(Shining white)→Iron sulphate(Green)+Copper(Brown).
Explanation:
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