Question

1-
why does the colour of copper Sulphate solution change
when an uon nail is depped un uh-
?​

Answer 1

Answer:

When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green.

Answer 2

Answer:

hi friend,

here is answer for u.

Explanation:

it is because of displacement reaction

displacement reaction: the high reactive metal replaces the less reactive, so when the iron nail is dipped in copper sulphate solution iron nail replaces the copper