Question

iron fillings are put in different test tubes a, b, c and d containing zns o4, CU S o4, al2 (so4)3 , cacl2 solutions respectively. in which of the following test tubes will change be observed ?

Answer 1

According to the reactivity series of metals Fe will only replace Cu from CuSO4 since Cu is below Fe....others like Zn, Ca, Al are above Fe in the series and hence no reaction will take place

So the change will be observed in test tube B....Fe + CuSO4 ---> Cu + FeSO4

Answer 2

Answer:

Explanation:

When we see the reactivity series table ,we see that Zn,Al,Ca are placed higher than Fe.

Also Cu is placed below Fe

So,Fe displaces Cu

Therefore, change can be observed in TEST-TUBE B

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