Question

Q.5) When a piece of zinc metal is added to ferrous sulphate solution
(a) the solution becomes colourless and the surface of zinc turns grayish black
(b) no reaction takes place
(c) the solution becomes colourless and the surface of zinc turns brown
(d) The solution becomes blue​

Answer 1

Answer:

A) Zinc is more reactive than iron, hence when added' to iron (II) sulphate, it can displace iron metaliand the colour of solution fades from green to colourless due to formation of zinc sulphate. The greyish black iron metal gets deposited

B)The reactivity is determined on the basis of reactivity series. The metals which lie above in the series are more reactive than the ones which lie below in the series. When zinc granules are added to ferrous sulfate, the zinc metal displaces iron metal from its chemical reaction and it decolorize the solution.

C)When zinc is added to the solution of iron sulphate, the colour of iron sulphate solution changes. It is because zinc is more reactive than iron, therefore, it displaces iron from its solution of iron sulphate and a grey precipitate of iron and a colourless solution of zinc sulphate is formed.

D)-------

Explanation:

hope this answer help u I only know a, b , c not d sorry

Answer 2

Answer:

(a) the solution becomes colourless and the surface of zinc turns grayish black

Because,

When zinc is added to solution of Iron (II) sulphate, the colour of iron sulphate solution changes. It is because zinc is more reactive than iron, therefore it displaces iron from it's solution of iron sulphate and a grey precipitate of iron and a colourless solution of zinc sulphate is formed.

Zn+FeSO4--------> ZnSO4+Fe

Hope this will help you

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