Which of the following compounds is used in the industry for bleaching cotton fabrics?

Options

A. `NaOCI`
B. `NaCIO_(2)`
C. `NaCIO_(3)`
D. `NaCIO_(4)`

Answer

1

Explanation

Sodium hyprochlorite (the most important salt of `HOCI`) is used extensively for bleaching and decolouixzation of wood pulp and textiles (cotton fabrics) and as a domestic or household bleaching .
It is produced commercially by electrolysing and stirring vigorously brine solution .During electrolysis `H_(2)(g)` is liberated is cathode:
`2H_(2)O+2e^(-)rarrH_(2)(g)+2OH^(-)(aq.)`
This increase the concentration of `OH^(-)` in the solution. The stirring mixes the `CI_(2)` formed at the anode with the `OH^(-)` so they can react together:
Anode:
`2CI^(-)(aq.)rarrCI_(2)+2e^(-)`
` CI_(2)+2OH^(-)(aq.)rarrOCI^(-)(aq.)+CI^(-)(aq)+H_(2)O(l)`