1.

Dissociation of an indicator can be considered as Hln hArr H^(+)+ln^(-). Colour of Hln is P and ln^(-) is Q. Given the ratio of concentration of Hln to ln^(-) ranges from 10 to 1//10 then which of the following statements are correct.

Answer»

SOLUTION assumes P COLOUR, when `PH lepK_(ln-1)`
Solution assumes P colour, when `pH GE pH _(ln-1)`
Solution assumes Q colour , when `pH gepK_(ln-1)`
Solution assumes Q colour , when `pH lepK_(ln-1)`

Solution :MAXIMUM pH to see distinct colour is `pK_(ln-1)` and minimum pH to see a colour is `pK_(ln+1)`


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