What would a student report nearly after 30 minutes of placing duly cl

1.	What would a student report nearly after 30 minutes of placing duly cleaned strips of aluminium, copper, iron and zinc in freshly prepared iron sulphate solution taken in four beakers ?
Answer» Case-1 : 3FeSO₄ (aq) + 2Al → Al₂(SO₄)₃ (aq) + 3Fe(s) In this case light green solution of ferrous sulphate turns into colourless due to the displacement of Fe by Al. Case-2 : FeSO₄ + Cu → No reaction Because copper is less reactive than iron. Case-3 : FeSO₄ + Fe → No reaction Case-4 : FeSO₄(aq) + Zn → ZnSO₄(aq) + Fe Zinc is more reactive than iron so light green colour of solution turns into colourless.

What would a student report nearly after 30 minutes of placing duly cleaned strips of aluminium, copper, iron and zinc in freshly prepared iron sulphate solution taken in four beakers ?

Answer»

Case-1 : 3FeSO₄ (aq) + 2Al → Al₂(SO₄)₃ (aq) + 3Fe(s)

In this case light green solution of ferrous sulphate turns into colourless due to the displacement of Fe by Al.

Case-2 : FeSO₄ + Cu → No reaction Because copper is less reactive than iron.

Case-3 : FeSO₄ + Fe → No reaction

Case-4 : FeSO₄(aq) + Zn → ZnSO₄(aq) + Fe

Zinc is more reactive than iron so light green colour of solution turns into colourless.

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What would a student report nearly after 30 minutes of placing duly cleaned strips of aluminium, copper, iron and zinc in freshly prepared iron sulphate solution taken in four beakers ?

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