Elements of Groups 16, 17 and 18 — Chemistry STD 12 Science — Question
Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryElements of Groups 16, 17 and 182 Marks
Question
Explain reactions of halogens with water.
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Answer
Halogens react with water forming halo acids and haloxyaClds.
The reactivity decreases from fluorine to iodine.
$\begin{aligned} & 2 F _2+2 H _2 O \rightarrow 4 HF + O _2 \\ & 3 F _2+3 H _2 O \rightarrow 6 HF + O _3 \\ & X _{2( g )}+ H _2 O _{(1)} \rightarrow HX _{( aq )}+ HOX ( X = Cl , Br ) \\ & \end{aligned}$
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