Question

What is the colour of zinc sulphate, ferrous sulphate,copper sulphate and aluminium sulphate ?

when we add aluminium metal in ferrous sulphate what is its colour ?

when we add aluminium metal in copper sulphate what is its colour ?

Answer 1

Aluminium sulphate - white

Ferrous sulphate - light green

Copper sulphate - blue

Zinc sulphate - white

When we add aluminium to ferrous sulphate then the green colour of ferrous sulphate slowly disappears and aluminium is seen to settle down in the reaction. Aluminium being more reactive displaces iron in iron sulphate.

When we add aluminium to copper sulphate then displacement reaction takes place. Aluminium being more reactive than copper displaces copper from its salt solution to form aluminium sulphate which is white in colour

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