In which of the following reactions,chlorine | vedclass

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(D) An oxidising agent is a substance that undergoes reduction or facilitates the oxidation of another reactant (e.g.,by removing hydrogen).In all thr

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$(i)$,(ii) and (iii)

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(D) An oxidising agent is a substance that undergoes reduction or facilitates the oxidation of another reactant (e.g.,by removing hydrogen).In all three given reactions,the oxidation state of chlorine decreases from $0$ in $Cl_2$ to $-1$ in $HCl$,meaning chlorine is reduced.$(i)$ $CH_3CH_2OH + Cl_2 \longrightarrow CH_3CHO + HCl$: Chlorine removes hydrogen from ethanol,oxidizing it to acetaldehyde.(ii) $CH_3CHO + Cl_2 \longrightarrow CCl_3CHO + HCl$: Chlorine replaces hydrogen atoms in acetaldehyde,acting as an oxidant.(iii) $CH_4 + Cl_2 \stackrel{hv}{\longrightarrow} CH_3Cl + HCl$: Chlorine removes hydrogen from methane,oxidizing it to chloromethane.Since chlorine is reduced in all these reactions,it acts as an oxidising agent in all of them.

In which of the following reactions,chlorine acts as an oxidising agent?
$(i)$ $CH_3CH_2OH + Cl_2 \longrightarrow CH_3CHO + HCl$
(ii) $CH_3CHO + Cl_2 \longrightarrow CCl_3CHO + HCl$
(iii) $CH_4 + Cl_2 \stackrel{hv}{\longrightarrow} CH_3Cl + HCl$
The correct answer is

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In which of the following reactions,chlorine acts as an oxidising agent?$(i)$ $CH_3CH_2OH + Cl_2 \longrightarrow CH_3CHO + HCl$(ii) $CH_3CHO + Cl_2 \longrightarrow CCl_3CHO + HCl$(iii) $CH_4 + Cl_2 \stackrel{hv}{\longrightarrow} CH_3Cl + HCl$The correct answer is