Question

If a investigation can't decide weather copper or aluminium are more or less reactive than zinc or lead what can go wrong in that investigation.​

Answer 1

Answer:

Because aluminum replaces compounds of zinc, iron, and copper to produce pure zinc, iron, and copper. Aluminum reacts more. Look how pure aluminum rips the chlorine away from the zinc chloride to produce aluminum chloride and zinc.

Answer 2

Answer:

The blue colour of copper sulphate fades and colourless zinc sulphate solution is obtained. Therefore, zinc is more reactive than copper.

Aluminium has the ability to displace zinc, iron, copper from their respective salt solutions and therefore is more reactive than them