JEE Mains · Chemistry · STD 12 - p -Block elements - ll
The correct group of halide ions which can be oxidised by oxygen in acidic medium is
- A \(Br ^{-}\)only
- B \(Cl ^{-}, Br ^{-}\)and \(I ^{-}\)only
- C \(Br ^{-}\)and \(I ^{-}\)only
- D \(I ^{-}\)only
Answer & Solution
Correct Answer
(D) \(I ^{-}\)only
Step-by-step Solution
Detailed explanation
Only \(I ^{-}\)among halides can be oxidised to Iodine by oxygen in acidic medium \(4 I ^{-}( aq )+4 H ^{+}( aq )+ O _2( g ) \rightarrow 2 I _2( s )+2 H _2 O ( l )\)
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