To study the reaction of the mets Zn,Fe and Al with the solutions of ZnSO4, FeSo4, CuSO4,Al2(SO4)3 and to arrange these metals in the decreasing order of their reactivity.
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Answer: The order of reactivity for these metals follow the order: Al < Zn < Fe < Cu.
Explanation: The reactivity of elements is the tendency to loose or gain electrons.
The given elements are metals of sulfates. Hence, their reactivity is the tendency to loose electrons.
The reactivity is studied on the basis of the reactivity table. The metals which lie above in the table are more reactive than the metals which lie below in the table.
Hence, from the reactivity table (attached below), the decreasing order of the reactivity of the given metals is Al < Zn < Fe < Cu.
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