Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows.
Metal
|
Iron (II) sulphate
|
Cooper (II) sulphate
|
Zinc sulphate
|
Silver nitrate
|
A.
|
No reaction
|
Displacement
|
|
|
B.
|
Displacement
|
|
No reaction
|
|
C.
|
No reaction
|
No reaction
|
No reaction
|
Displacement
|
D.
|
No reaction
|
No reaction
|
No reaction
|
No reaction
|
Use the Table above to answer the following questions about metals A, B, C and D.
(i) Which is the most reactive metal?
(ii) What would you observe if B is added to a solution of copper (II) sulphate?
(iii) Arrange the metals A, B, C and D in the order of decreasing reactivity.