Gujarat BoardEnglish MediumSTD 11 ScienceChemistryRedox Reactions1 Mark
MCQ
Oxygen has an oxidation state of $+2$ in.
A
$\ce{H_2O_2}$
✓
$\ce{OF_2}$
C
$\ce{SO_2}$
D
$\ce{H_2O}$
✓
Answer
Correct option: B.
$\ce{OF_2}$
Oxidation state of oxygen is always $-2$ except in peroxides,superoxides and when it reacts with fluorine.
In $\ce{H_2O_2},$ oxidation state of $H$ is $+1,$ so oxidation state of oxygen is $-1.$
In $\ce{OF_2}$, oxidation state of $F$ is $-1,$ so oxidation state of oxygen is $+2.$
In $\ce{SO_2}$ and $\ce{H_2O}$, oxidation state of oxygen is $-2.$
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