Which of the following represents a redo...

Which of the following represents a redox reaction?

`NaOH+HClrarrNaCl+H_(2)O`

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

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

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

Text Solution

Verified by Experts

The correct Answer is:

`(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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Which of the following represents redox reaction ?

`NaOH_((a)) + ` dil. HCl ` rarr NaCl_((aq)) + H_(2)O_((l))`

`KOH_((aq)) + `conc. `HNO_(3) rarr KNO_(3(aq)) + H_(2)O_((l))`

`BaCl_(2(aq)) + `dil. `H_(2)SO_(4) rarr BaSO_(4(s)) + 2HCl_((aq))`

`Fe_((s)) + CuSO_(4(aq)) rarr FeSO_(4(aq)) + Cu_((s))`

Which of the following represents redox reactions?

`Cr_(2)O_(7)^(2-)+2overset(ө)OHrarr2CrO_(4)^(2-)+H_(2)O`

`SO_(3)^(2-)+H_(2)O+I_(2)rarrSO_(4)^(2-)+2I^(ө)+2H^(o+)`

`Ca(OH)_(2)+Cl_(2)rarrCa(Ocl)_(2)+CaCl_(2)`

`PCl_(5)rarrPCl_(3)+Cl_(2)`

Which of the following reaction is a redox reaction?

`P_(2)O_(5)+2H_(2)O rarr H_(4)P_(2)O_(7)`

`2AgNO_(3)+BaCl_(2) rarr 2AgCl+Ba(NO_(3))_(2)`

`BaCl_(2)+H_(2)sO_(4) rarr BaSO_(4)+2HCl`

`Cu+2AgNO_(3) rarr 2Ag+Cu(NO_(3))_(2)`