# Why is chlorine and water a disproportionation reaction?

Jun 25, 2018

#### Answer:

I think you refer to the disproportionation of elemental chlorine to chloride anion, and hypochlorous acid....

#### Explanation:

And we can go thru the rigmarole of redox transtions…

$\text{Elemental chlorine is reduced (i):}$

$\frac{1}{2} C {l}_{2} + {e}^{-} \rightarrow C {l}^{-}$

$\text{Elemental chlorine is oxidized to hypochlorous acid (ii):}$

$\frac{1}{2} C {l}_{2} + {H}_{2} O \left(l\right) \rightarrow H O \stackrel{+ I}{C} l + + {H}^{+} + {e}^{-}$

And we adds $\left(i\right) + \left(i i\right)$ to get....

$C {l}_{2} + {H}_{2} O \left(l\right) \rightarrow H O \stackrel{+ I}{C} l + + H C l \left(a q\right)$

The given equation is balanced with respect to mass and charge, as indeed it MUST be if we purport to represent chemical reality...