ChemistryRishi dropped metals P,Q,Rand S in the salt solution and recorded the following observations.Based on the above observations :A. Arrange the given samples in the decreasing order of reactivity.B. If Q reacts with CuSO4, solution what will be the reaction taking place?

Rishi dropped metals P,Q,Rand S in the salt solution and recorded the following observations.


Based on the above observations :

A. Arrange the given samples in the decreasing order of reactivity.

B. If Q reacts with CuSO4, solution what will be the reaction taking place?

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    Solution:

    A. 

    S will have the minimum reactivity because no reaction occurs, and Q will have the maximum reactivity as it reacts with all four metals. Q removes all metals from their salt solution; as a result, it has the highest level of reactivity, followed by P, which displaces Ca and Zn from its salt solution, then R, which only removes Zinc from its salt solution, followed by S has the least reactivity of all the compounds. 

    Hence it didn't replace any metal in the salt solution. Thus, the decreasing order of reactivity is as follows:

    𝑄 > 𝑃 > 𝑅 > 𝑆

    B.

    The chemical formulae of products formed when Q reacts with CuSO4 are Cu and QSO4. Since Q has the highest level of reactivity and can remove even Na from its salt solution, it will definitely replace Cu because it is less reactive than Na

    CuSO4+QCu+QSO4

    Since the valency of the product is not provided, the chemical formulae of products formed can also be Q2SO4and so on. 

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