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Get Answers to all your Questions
Q.5. 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 | Copper (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 question about metals
A, B, C and D.
(iii) Arrange the metals A, B, C and D in the order of decreasing
reactivity.
Answers (1)
As stated in part (a),
No metal is able to displace zinc from its solution; thus, zinc is most reactive of given metals.
Further, only metal B is able to displace iron from iron sulphate solution. And element A can displace copper. Similarly, element C can displace silver from its solution.
So the reactivity order obtained is : D < C < A < B
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