Question

A zinc rod is left for nearly 20minutes in a copper sulphate solution.what change would you observe in zinc rod?

Answer 1

There will we green deposit on zinc rod

Answer 2

Answer: The correct answer is-

Zinc is more reactive than copper. Due to this, it will undergo displacement reaction.

When zinc rod is placed in the copper sulphate solution, it will displace copper from its solution and the brownish copper color will start depositng over the zinc rod. As a result, copper sulphate solution start becoming decolorized and zinc sulphate solution starts forming.