Question

34. The table given below shows the reactions of metals with the solutions of metal sats
(5 marks)
Reaction of Metal X with: Reaction of Metal Y with: Reaction of Metal Z with
X sulphate → No reaction X sulphate → No reaction X sulphate → No reaction
Y sulphate → Displaces Y Y sulphate → No reaction Y sulphate → Displaces Y
Z sulphate → Displaces Z Z sulphate → No reaction Z sulphate → No reaction
a) On the basis of your observation of the data given above, arrange the metals X, Y,
and Z in order of increasing reactivity and justify your answer.
b) Will copper react with a salt solution of zinc chloride? Justify your answer.​

Answer 1

Answer:

Correct option is

D

II and IV

Explanation:

Correct option is

D

II and IV

Black residue will appear due to formation of iron in tubes (II) and (IV) because of displacement reaction taking place and the reaction is given below...

2Al(s)+3FeSO4(aq)→Al2(SO4)3(aq)+3Fe(s) (Black residue)

Zn(s)+FeSO4(aq)→ZnSO4(aq)Fe(s) (Black residue)