MCQ
$Br_2 + 2{X^-}_{aq} \to X_2 + 2{Br^-}_{aq}$ above reaction is correct when $X^-$ is :
- A$F^-, Cl^-$
- ✓$I^-$ only
- C$F^-, Cl^-, I^-$
- DNot possible for any halide
✓
Answer
Correct option: B.
$I^-$ only
b
Concentrated $H _2 SO _4$ cannot be used to prepare $HBr$ from $NaBr$ because it oxidises $HBr$ to $Br _2$.
Concentrated $H _2 SO _4$ cannot be used to prepare $HBr$ from $NaBr$ because it oxidises $HBr$ to $Br _2$.
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