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An acid-base indicator HIn differs in colour from its conjugate base [IN-]. The human eye is sensitive to colour differences { only when the ratio \lbrack\operatorname{In^-\rbrack/\lbrack HIn\rbrack is greaterthan 10 or smaller than 0.1 . What should be the minimum change in PH of the soln to observe a complete colour change? a=1×10^{-5 |
| Answer» An acid-base indicator HIn differs in colour from its conjugate base [IN-]. The human eye is sensitive to colour differences { only when the ratio \lbrack\operatorname{In^-\rbrack/\lbrack HIn\rbrack is greaterthan 10 or smaller than 0.1 . What should be the minimum change in PH of the soln to observe a complete colour change? a=1×10^{-5 | |