Write the word equation and the chemical equation and also state the kind of change when iron nail is kept immersed in a copper sulphate solution.

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Solution

When an iron nail is dipped in Copper sulphate solution a displacement reaction takes place, in which one metal displaces the other metal from its salt solution.

Word Equation : Iron + Copper sulphate $\to$ Iron sulphate + copper.

Chemical Equation: $F e + C u S O_{4} \to C u + F e S O_{4}$

A chemical change will take place when an iron nail is immersed in $C u S O_{4}$ solution.

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Q. (1)
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) What changes do you expect?

(2)
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.

(b) Are these changes chemical in nature?

(3)
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.

Q. Identify the type of chemical reaction taking place and also write the balance chemical equation for :Iron nails when left dipped in blue copper sulphate solution, It becomes brownish in colour and the blue colour of copper sulphate fades away.

Question 22

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) What changes do you expect?
(b) Are these changes chemical in nature?
(c) Write a word equation for the chemical change, if any.

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