Chlorine water on standing loses its colour and forms :
- $HCl$ only
- $HOCl$ and $HOCl_2$
- $HCl$ and $HOCl$
- $HCl$ and $HClO_2$
The Correct Option is C
Solution and Explanation
$$
Cl _{2}+ H _{2} O \rightarrow HCl + HOCl
$$
This is a disproportionation reaction.
The hypochlorous acid so formed gives nascent oxygen which is responsible for oxidizing and bleaching properties of chlorine.
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Concepts Used:
P-Block Elements
- P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
- P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. It’s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.
P block elements consist of:
- Group 13 Elements: Boron family
- Group 14 Elements: Carbon family
- Group 15 Elements: Nitrogen family
- Group 16 Elements: Oxygen family
- Group 17 Elements: Fluorine family
- Group 18 Elements: Neon family