Q- Betty added Aluminium metal to colourless solution of Zinc sulphate- After half an hour the solution was observed- It was colourless- She recorded her observations in the following statements- nbsp-i- No reaction occurred nbsp-ii- Reaction occurred and aluminium sulphate was formed-iii- Zinc is more reactive than aluminium- nbsp-iv- Aluminium is more reactive than zinc nbsp-The correct observations nbsp- are - nbsp-a- -i- -ii- nbsp- nbsp- nbsp- nbsp-b- -ii- -iii-c- -iii- -iv- nbsp- nbsp- -d- -ii- -iv- nbsp- nbsp-

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Byju's Answer

Standard X

Chemistry

Corrosion

Q. Betty adde...

Question

Q. Betty added Aluminium metal to colourless solution of Zinc sulphate. After half an hour the solution was observed. It was colourless. She recorded her observations in the following statements.
(i) No reaction occurred
(ii) Reaction occurred and aluminium sulphate was formed.
(iii) Zinc is more reactive than aluminium.
(iv) Aluminium is more reactive than zinc
The correct observations are :
(a) (i), (ii) (b) (ii), (iii)
(c) (iii), (iv) (d) (ii), (iv)

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Solution

Dear Student,

Answer is d) (ii) & (iv)

Aluminium react with zinc sulphate and displacement reaction takes place as aluminium is more reactive as compared to zinc and results in formation of aluminium sulphate.

ZnSO₄ + Al ----> Al₂(SO₄)₃ + Zn

Regards

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Answer the following questions based on above information:
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(ii) What would be observed if B is added to a solution of copper (II) sulphate and why?
(iii) Arrange the metals A, B, C and D in order of increasing reactivity.
(iv) Container of which metal can be used to store both zinc sulphate solution and silver nitrate solution. Give reason for your choice.
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A cleaned aluminium foil was placed in an aqueous solution of zinc sulphate. When the aluminium foil was taken out of the zinc sulphate solution after 15 minutes, its surface was found to be coated with a silvery grey deposit. From the above observation, it can be concluded that:

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Dear Student, Answer is d) (ii) & (iv) Aluminium react with zinc sulphate and displacement reaction takes place as aluminium is more reactive as compared to zinc and results in formation of aluminium sulphate. ZnSO4 + Al ----> Al2(SO4)3 + Zn Regards

Dear Student,

Answer is d) (ii) & (iv)

Aluminium react with zinc sulphate and displacement reaction takes place as aluminium is more reactive as compared to zinc and results in formation of aluminium sulphate.

ZnSO₄ + Al ----> Al₂(SO₄)₃ + Zn

Regards