Discussion Forum



1)

The products obtained when chlorine gas reacts with cold and dilute aqueous NaOH are


A) $ClO^{-}$ and $ClO_{3}^{-}$

B) $ClO_{2}^{-}$ and $ClO_{3}^{-}$

C) $Cl^{-}$ and $ClO_{}^{-}$

D) $Cl^{-}$ and $ClO_{2}^{-}$

Answer:

Option C

Explanation:

Cl2 , Br2  and I2  form a mixture of halide and hypohalites when react with cold dilute alkalies while a mixture of halides and haloate when react with concentrated cold alkalies.

    $Cl_{2}+2NaOH \rightarrow NaCl+NaClO+H_{2}O$

                          cold and dilute

$\therefore$     Cl- and ClO- are obtained as products when chlorine gas reacts with cold and dilute aqueous NaOH.