Question

any replacement of copper sulphate with magnesium?​

Answer 1

Answer:

When a piece of magnesium is dipped into blue copper sulfate solution: the blue colour fades as colourless magnesium sulfate solution forms. brown copper coats the surface of the magnesium.

Answer 2

Answer:

magnesium becomes coated with copper. the blue colour of the solution fades as the blue copper(II) sulfate solution is replaced by a colourless magnesium sulfate solution.