What happens when -
(a) A piece of zinc metal is added to a copper sulphate solution?
(b) A piece of aluminum metal is added to dilute hydrochloric acid?
(c) A piece of silver metal is added to copper sulphate solution?
If the reaction occurs, also write its balanced chemical equation.
Answers
Answer:
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.
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).
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:
A) When zinc metal is added to copper sulphate solution, the colour of CuSO4 solution disappears and colourless zinc sulphate solution is formed.
Ag + CuSO4 ==> No reaction
B) The metal aluminium dissolves in hydrochloric acid, producing aluminum chloride and colorless hydrogen gas.
2Al(s) + 6HCl(aq) -----> 2AlCl3(aq) + 3H2(g).
C) When silver Ag metal is added to copper sulphate CuSO4 solution, no reaction takes place.
NO REACTION
Explanation:
A) Solid brown copper is deposited as it displaces by Zn.
B) Aluminum reacts with diluted hydrochloric acid at room temperature. The reaction taking place between aluminium and hydrochloric acid is irreversible. And the final products will not react with each other.
C) 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.