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When zinc is added to CuSO(4) solution, ...

When zinc is added to `CuSO_(4)` solution, copper is precipitated. It is because of

A

Oxidation of `Cu^(+2)`

B

Reduction of `Cu^(+2)`

C

Hydrolysis of `CuSO_(4)`

D

Ionization of `CuSO_(4)`

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The correct Answer is:
B
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When KCN is added to CuSO_(4) solution:

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The reaction, Zn+CuSO_(4)rarrCu+ZnSO_(4) goes to completion. In one experiment, 10 g of metallic zinc was added to 200 mL CuSO_(4) solution. After all the Cu was precipitated, it was found that not all the zinc has dissolved. After filtration, the total solid at the end of reaction was 9.81 g . Calculate the weight of Cu deposited and molarity of CuSO_(4) in original solution.

AAKASH INSTITUTE-REDOX REACTIONS-ASSIGNMENT SECTION - A
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  2. In which reaction, there is change in oxidation number of N atom?

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  3. When zinc is added to CuSO(4) solution, copper is precipitated. It is ...

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  4. Which of the following reactions involve oxidation and reduction?

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  5. Which of the following involves the reduction of copper?

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  6. Which one of the following is the correct match?

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  7. The oxidation number of sulphur in H(2)S(2)O(8) is:

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  8. In which of the following compounds iron has lowest oxidation number?

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  9. Phosphorus has the oxidation state +3 in

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  10. The brown ring complex compound is formulated as [Fe(H(2)O)(5)NO]SO(4)...

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  11. Oxidation number of Cr in CrO(5) is

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  12. In which of the following compounds , the oxidation number of iodine i...

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  13. Which reaction involves neither oxidation nor reduction?

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  14. In the chemical reaction, K(2)Cr(2)O(7)+aH(2)SO(4)+bSO(2) rarr K(2)S...

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  15. What is the oxidation state of sodium in sodium amalgam (Na//Hg)?

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  16. Which of the following compound cannot be oxidised by O(3)?

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  17. In alkaline medium , KMnO(4) reacts as follows 2KMnO(4)+2KOH rarr 2K...

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  18. The equivalent weight of FeS(2) in the following reaction is FeS(2)+O(...

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  19. When SO(2) is passed in acidified potassium dichromate solution, the o...

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  20. How many mole of FeSO(4) reacted with one mole of KMnO(4) in acidic me...

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