Why cannot each metal react to its own salt(Eg. Cu and CuSO4)?

1.	Why cannot each metal react to its own salt(Eg. Cu and CuSO4)?
Answer» Zn(S)+CUSO4(Aq) = Cu+ZnSO4 above REACTION will happen as per reactivity SERIES, our case same metal CANT replace the same metal of metal salt because of same reactivity.

Answer»

Zn(S)+CUSO4(Aq) = Cu+ZnSO4

above REACTION will happen as per reactivity SERIES,

our case same metal CANT replace the same metal of metal salt because of same reactivity.

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