Strips of Zinc, Iron, Magnesium and copper are taken in the test tubes A, B, C, and respectively.
Same quantity of ferrous sulphate solution is added to the test tubes. In which test tubes chemical
reaction will occur? why? write the chemical equations for the reactions taking place here?
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Explanation:
Correct option is
D
II and IV
Black residue will appear due to formation of iron in tubes (II) and (IV) because of displacement reaction taking place and the reaction is given below...
2Al(s)+3FeSO
4
(aq)→Al
2
(SO
4
)
3
(aq)+3Fe(s) (Black residue)
Zn(s)+FeSO
4
(aq)→ZnSO
4
(aq)Fe(s) (Black residue)
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