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Which of the following represents oxidat...

Which of the following represents oxidation?
a. `NO_(2)^(ө)rarrN_(2), b. VO_(2)^(ө)rarrVO_(3)^(ө)`
c. `ClO^(ө)rarrCl^(ө), d. CrO_(4)^(2-)rarrcr_(2)O_(7)^(2-)`

Text Solution

Verified by Experts

The correct Answer is:
C
a. `6e^(-)+2NO_(2)^(ө)rarrN_(2)`(reduction)
`2x=8= -2, 2x=0`
`2x=6`
b. `VO_(2)^(ө)rarrVO_(3)^(ө)+2e^(-)`(oxidation)
`x-4= -1 x-6= -1`
`x=3, x=5`
c. `2e^(-)+ClO^(ө)rarrCl^(ө)`(reduction)
`x-2= -1, x= -1`
`x=1`
d. `2Cr_(4)^(2-)rarrCr_(2)O_(7)^(2-)`(no change in oxidation number number of `Cr`)
`2x-16= -4, 2x-14= -2`
`2x=12, 2x=12`
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