MCQ
Which of the following can react with $K _{2} Cr _{2} O _{7}$
- ✓$SO _{3}^{2-}$
- B$CO _{3}^{-2}$
- C$SO _{4}^{-2}$
- D$NO _{3}^{-}$
✓
Answer
Correct option: A.
$SO _{3}^{2-}$
a
$K _{2} Cr _{2} O _{7}$ being a strong oxidizing agent easily oxidizes $SO _{3}^{-2}$ to $SO_{4}^{-2} .$ The reaction is shown below.
$K _{2} Cr _{2} O _{7}$ being a strong oxidizing agent easily oxidizes $SO _{3}^{-2}$ to $SO_{4}^{-2} .$ The reaction is shown below.
$K _{2} Cr _{2} O _{7}+ SO _{3}^{-2} \rightarrow Cr ^{3+}+ SO _{4}^{-2}$
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