Question

Q4- What happens when a piece of

(a) zinc metal is added to copper sulphate solution?

(b) aluminium metal 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

Answer:

(a) When zinc metal is added to copper sulphate solution, the colour of CuSO4 solution disappears and colourless zinc sulphate solution is formed. Solid brown copper is deposited as it displaces by Zn...

(b) Aluminium reacts with dilute hydrochloric acid to give aluminum chloride and hydrogen gas. The balanced equation is = 2Al(s) + 6HCl(aq) -----> 2AlCl3(aq) + 3H2(g).

(c) Therefore, when silver Ag metal is added to copper sulphate CuSO4 solution, no reaction takes place as silver is less reactive than that of copper and cannot displace copper from its solution. Hence, when a piece of silver metal is added to copper sulphate solution there will be no reaction.

Answer 2

$\huge\mathcal\colorbox{pink}{{\color{b}{♡Your Answer♡}}}$

$\green{\textbf{When zinc metal is added 2 copper sulphate solution}}$

(a)    When zinc metal is added to copper sulphate solution, the colour of CuSO4 solution disappears and colourless zinc sulphate solution is formed. Solid brown copper is deposited as it displaces by Zn.

$\green{\textbf{Zn (s) + CuSO4 (aq) → ZnSO4 (aq) + Cu (s) }}$

$\blue{\textbf{Where,}}$

$\blue{\textbf{Zn → Zinc (Grey)}}$

$\blue{\textbf{CuSO4 → Copper Sulphate solution (Blue)}}$

$\blue{\textbf{ZnSO4 → Zinc Sulphate solution (Colourless)}}$

$\blue{\textbf{Cu → Copper (brown)}}$

$\green{\textbf{When aluminium metal is added to dilute hydrochloric acid}}$

(b) Aluminium displaces hydrogen from HCl and hydrogen gas is evolved with soluble aluminium chloride.

$\green{\textbf{2Al (s) + 6HCL (aq) → 1AlCl3 (aq) + 3H2 (s) }}$

$\blue{\textbf{Where,}}$

$\blue{\textbf{Al → Aluminium}}$

$\blue{\textbf{HCL → Hydrochloric Acid}}$

$\blue{\textbf{AlCl3 → Aluminium Chloride}}$

$\blue{\textbf{H2 → Hydrogen}}$

$\green{\textbf{When silver metal is added to copper sulphate solution}}$

(c) Silver is a Nobel metal and does not exhibit any reaction with copper sulphate.

$\huge\mathcal\colorbox{pink}{{\color{b}{♡Hope this helps♡}}}$