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A certain indicator (an organic dye) has `pK_(a)=5`. For which of the following titrations may it be suitableA. acetic acid against `NaOH`B. aniline hydrochloride against `NaOH`C. sodium carbonate against `HCl`D. barium hydroxide against oxalic acid |
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Answer» Correct Answer - C `pK_(HIn)=5` (`a`) `CH_(3)COOH+NaOH`, end point `pHgt7` (`b`) Aniline hydrochloride `+ NaOH`, end point `pHgt7` (`c`) `NaHCO_(3)+HCl`, end point `pHlt7` `Ba(OH)_(2)+H_(2)C_(2)O_(4)`, end point `pHgt7` |
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