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Which of the following represents a redo...

Which of the following represents a redox reaction?

A

`NaOH+HClrarrNaCl+H_(2)O`

B

`BaCl_(2)+H_(2)SO_(4)rarrBaSO_(4)+2HCl`

C

`CuSO_(4)+2H_(2)OrarrCu(OH)_(2)+H_(2)SO_(4)`

D

`Zn+2HClrarrZnCl_(2)+H_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
`(a) and (b)` are neutralisation reactions.
c. The oxidation state of `Cu is +2` in both reactant and product, and `SO_(4)^(2-)` ion doens not change. So it is none reaction.
d. It is a redox reaction.
`ZnrarrZn^(2+)+2e^(-)("Oxidation")`
`2H^(o+)+2e^(-)rarrH_(2) ("Reduction")`
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Knowledge Check

  • Which of the following represents redox reaction ?

    A
    `NaOH_((a)) + ` dil. HCl ` rarr NaCl_((aq)) + H_(2)O_((l))`
    B
    `KOH_((aq)) + `conc. `HNO_(3) rarr KNO_(3(aq)) + H_(2)O_((l))`
    C
    `BaCl_(2(aq)) + `dil. `H_(2)SO_(4) rarr BaSO_(4(s)) + 2HCl_((aq))`
    D
    `Fe_((s)) + CuSO_(4(aq)) rarr FeSO_(4(aq)) + Cu_((s))`

  • Which of the following represents redox reactions?

    A
    `Cr_(2)O_(7)^(2-)+2overset(ө)OHrarr2CrO_(4)^(2-)+H_(2)O`
    B
    `SO_(3)^(2-)+H_(2)O+I_(2)rarrSO_(4)^(2-)+2I^(ө)+2H^(o+)`
    C
    `Ca(OH)_(2)+Cl_(2)rarrCa(Ocl)_(2)+CaCl_(2)`
    D
    `PCl_(5)rarrPCl_(3)+Cl_(2)`

  • Which of the following reaction is a redox reaction?

    A
    `P_(2)O_(5)+2H_(2)O rarr H_(4)P_(2)O_(7)`
    B
    `2AgNO_(3)+BaCl_(2) rarr 2AgCl+Ba(NO_(3))_(2)`
    C
    `BaCl_(2)+H_(2)sO_(4) rarr BaSO_(4)+2HCl`
    D
    `Cu+2AgNO_(3) rarr 2Ag+Cu(NO_(3))_(2)`
    • CENGAGE CHEMISTRY-REDOX REACTIONS-Exercises (Single Correct)
    1. Which of the following represents a redox reaction?

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    2. In the reaction SO(2)+2H(2)Srarr3S+2H(2)O the substance oxidised i...

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    3. In the reaction 3Cl(2)+6NaOHrarrNaClO(3)+5NaCl+3H(2)O the element ...

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    4. The oxidation number of oxygen in OF(2) is

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    5. An oxidation process involves

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    6. Which of the following is the strongest reducing agent in aqueous medi...

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    7. Which of the following is the strongest oxidising agent?

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    8. The oxidation number of phosphorus do not involve oxidation reduction?

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    9. Which of the following reactions do not involve oxidation reduction ? ...

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    10. For the redox reaction MnO(4)^(ө)+C(2)O(4)^(2-)+H^(o+)rarrMn^(2+)+CO...

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    11. The oxidation state of nitrogen is correctly given for

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    12. The oxidation state of chrominium in Cr(CO)(6) is

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    13. Which of the following is not a redox reaction?

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    14. In the chemical reaction, K(2)Cr(2)O(7)+xH(2)SO(4)+ySO(2)rarrK(2)SO(...

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    15. One mole of N(2)H(4) loses ten moles of electrons to form a new compou...

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    16. When copper is treated with a certain concentration of nitric acid, ni...

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    17. In which of the following pairs in there the greatest difference in th...

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    18. In the reaction 3Br(2)+6CO(3)^(2-)+3H(2)Orarr5Br^(ө)+BrO(3)^(ө)+6HCO...

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    19. In the reaction 2FeCl(3)+H(2)Srarr2FeCl(2)+2HCl+S

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    20. The oxidation number of cobalt in K [Co(CO)(4)] is

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