1.

Which of the following reactions does not involve either oxidation or reduction ?A. `VO_(2)^(+) rarr V_(2)O_(3)`B. `Na rarr Na^(+)`C. `CrO_(4)^(2-) rarr Cr_(2)O_(7)^(2-)`D. `Zn^(2+) rarr Zn`

Answer» Correct Answer - C
`{:(overset(**)(C)rO_(4)^(2-),,overset(**)(C)r_(2)O_(7)^(2-)),(x+[(-2)xx4]=2,,2x+(-2)xx7=-2),(x=8-2=+6,,2x=14-2=12),(,,x=12/2=+6):}`
In this reaction oxidation and reduction are not involved because there is no change in oxidation number.


Discussion

No Comment Found

Related InterviewSolutions