Question

What happens when a piece of

a) zinc metal is added to copper sulphate solution?
b) aluminium is added to dilute hydrochloric acid?
c) silver metal is added to copper sulphate solution?

Also, write the balanced chemical equation if the reaction occurs

Answer 1

Hey Mate ✌

Here's your answer,

a) Zn + CuSO4 ==> ZnSo4 + Cu

Here, Zinc reacts with Copper sulphate solution to form colourless zincsulphate and solid copper in deposited form.

b) 2Al + 6Dil. HCL ==> 2AlCl3 + 3Cl

Here, Alluminium reacts with dilute HCl to form alluminium chloride and hydrogen gas

c) Ag + CuSO4 ==> No reaction.

Here, Silver metal is less reactive than copper therefore reaction did not took place.

⭐ Hope it helps you : ) ⭐

Answer 2

Explanation:

a) zinc metal is added to copper sulphate solution.

   When zinc is added to copper sulphate $C_{u} SO_{4}$ solution due to more reactivity of zinc, copper is replaced by zinc and forms zinc sulphate. During the process, the colour of the solution changes from blue to colourless.

   $Zn_{(s)} +CuSO_{(4)} (aq)$         →         $Zn SO_{4} (aq)+Cu(s)$

  (Zinc)   (Copper sulphate)       (Zinc sulphate)     (Copper)

b)Aluminium metal reacts with dilute hydrochloric acid to form aluminium chloride and hydrogen gas.

        $2Al(s)+6Hcl(aq)$           →  $2AlCl_{3} (aq)+3H_{2}(g)$

 (Aluminium)  (Hydrochloric     (Aluminium      (Hydrogen gas)

                              acid)                chloride)

C) No reaction occurs. Reason Silver metal is less reactive than copper, therefore, it cannot displace copper from copper sulphate solution.

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