question_answer 9)

What happens when (a) Dilute sulphuric acid is poured on a copper plate? (b) Iron nails are placed in copper sulphate solution? Write word equations of the reactions involved.  

Answer:

(a) When dilute sulphuric acid is poured on a copper plate, copper does not react with dilute sulphuric acid. Copper + dilute sulphuric acid →  No reaction (b) When iron nails are placed in copper sulphate, displacement reaction takes place in which iron converts into copper. The blue colour copper sulphate has turned greenish.   Iron + Copper sulphate →   Iron sulphate + copper                  (blue)                 (light green)