Let the colour of the indicator Hin (coloueless) will be visible only when its ionised form (pink) is `25%` or more in a solution. Suppose Hin `(pK_(a
Let the colour of the indicator Hin (coloueless) will be visible only when its ionised form (pink) is `25%` or more in a solution. Suppose Hin `(pK_(a)=9.0)` is added to a solution of pH=9.6 predict what will happen? (Take log `2=0.3`)
A. pink colour will be visible
B. pink colour will not be visible.
C. `%` of ionised form will be less then `25%`
D. `%` of ionised form will be more in `25%`
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`HInrarrH^(+)+IN^(-)`
`K_(In)=([H^(+)][In^(-)])/([HIn])rArr ([In^(-)])/([HIn])=(K_(In))/([H^(+)])=(10^(-9))/(10^(-9.5))=10^(0.6)=4`
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