Reaction (i) will occur because iron is more reactive than copper and can displace it from copper sulfate.
Reaction (ii) will NOT occur because copper is less reactive than iron and cannot displace it from iron sulfate.
Reaction (i) will occur because iron is more reactive than copper and can displace it from copper sulfate.
Reaction (ii) will NOT occur because copper is less reactive than iron and cannot displace it from iron sulfate.