Question

state three points what happened when an iron nail is dipped inside a copper sulphate solution

Answer 1

$when \: fe \: (iron) \: is \: dipped \: in \: cuso4 \\ \\ (1)iron \: is \: more \: reactive \: element \: than \: copper \\ \\ (2) \: iron \: displace \: copper \: in \: the \: solution \: and \: form \: iron \: sulphate \\ \\ (3) \: when \: we \: remove \: iron \: nail \: from \: the \: solution \: a \: layer \: of \: copper \: is \: formed \: on \: it \:$
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Answer 2

1. Iron is more reactive than copper.
2. Iron being more reactive than copper displaces it.
3. The blue colour of the solution disappears.