An acid type indicator, H In differs in colour from its conjugate base `(In^(-))` . The human eye is sensitive to colour differences only when the ratio `[In^(-)]//[H In]` is greater than 10 or smaller than `0.1`. What should to observe a complete colour change ? `(K_(a)= 1.0xx10^(-5))`

An acid type indicator Hin differ in colour from its conjugate base (In^-) The human eye is sensitive to the colour of differences only when the ratio [In^-]/[HIn] is greater than 10 or smaller than 0.1. What should be the minimum change in the PH of the solution to observe a complete colour change (K_a= 1 xx 10^(-5)) ?

The human eye is sensitive to colour differences of indicator only when the ratio [In^(-) ] // [Hin] is greater then 10 (or) smaller than 0.1. What should be the minimum change in the pH of solution of observe a complete colour change . (pK_(In) =5) .

A base type indicator B differs in colour from its conjugate acid. (BH^(+)) .Acidic form is red in colour while basic form is blue in colour. Human eye can sense blue colour distincity when ratio of blue form concentration to red form cocnentration is (a)/(b) . or more.However ,red colour can be sensed by human eye distinctly when ratio of red form concentration of blue form concentration is (c)/(d) or more. Determine the pH range of solution in which human eyes will be unable to observe distinct red or distinctly blue colour.Take ionisation of B as K_(eq) .

Find the pH at which an acid indicator having concentration 1.0xx10^(-4)M , having dissociation of 1% shows a colour change.