MCQ
If chlorine gas is passed through hot $\text{NaOH}$ solution, two changes are observed in the oxidation number of chlorine during the reaction. These are $......$ and $......$
$A. 0$ to $+5$
$B. 0$ to $+3$
$C. 0$ to $–1$
$D. 0$ to $+1$
  • A
    $A$ and $B$
  • $A$ and $c$
  • C
    $b$ and $c$
  • D
    $A$ and $d$

Answer

Correct option: B.
$A$ and $c$
$6\text{NaOH}+3\text{Cl}_2\xrightarrow{\ \ \ \ \ \ \ \ }5\text{NaCl}+\text{NaClO}_3+3\text{H}_2\text{O}$
When chlorine gas is passed through hot $\text{NaOH}$ solution it produces $\text{NaCl}$ and $\mathrm{NaClO}_3$. Thus oxidation state of chlorine changes from $0$ to $-1$ and $0$ to $+5$ respectively.

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