Ionic EquilibriumHard
Question
A certain indicator (an organic dye) has pKa = 5. For which of the following titrations may it be suitable.
Options
A.acetic acid against NaOH
B.aniline hydrochloride against NaOH
C.sodium carbonate against HCl
D.barium hydroxide against oxalic acid
Solution
pKHIn = 5
(a) CH3COOH + NaOH, end point pH > 7
(b) Auillne hydrochloride + NaOH, end point pH > 7
(c) NaHCO3 + HCI, end point pH < 7
(d) Ba(OH)2 + H2C2O4, end point pH > 7
(a) CH3COOH + NaOH, end point pH > 7
(b) Auillne hydrochloride + NaOH, end point pH > 7
(c) NaHCO3 + HCI, end point pH < 7
(d) Ba(OH)2 + H2C2O4, end point pH > 7
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