Question

what happened when a piece of A zinc metal is added to copper sulphid solution (a) aluminium metal is added to tilute hydrochloric oxide (c) silver metal is added to copper sulphate solution

Answer 1

1. when a piece of a zinc metal is added to copper sulphate solution:
=> The blue color of copper sulphate will be disappeared from the solution.
It is because: See equation:

Zn(s) + CuSO₄ (aq) →  ZnSO₄ (aq) + Cu (s)

2. aluminium metal is added to tilute hydrochloric oxide:
=> Hydrogen is gas which will be evolved.
It is because: See equation:

2Al (s) + 6HCl (aq) → 2AlCl₃ (aq) + 3H₂ ↑

3. silver metal is added to copper sulphate solution:
=> No reaction will occur in this.
It is because: See the equation...

Ag (s) + CuSO₄ (aq) → No reaction