The indicator is used in a titration between an acid and a base

CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases

Problem

The indicator

\mathrm{HInd}

is used in a titration between an acid and a base. Which statement about the dissociation of the indicator is correct?

\mathrm{HInd(aq)\rightleftharpoons H^+(aq)+Ind^-(aq)}

Here,

\mathrm{HInd}

is colour A and

\mathrm{Ind^-}

is colour B. (1) In a strongly alkaline solution, colour B would be observed. (2) In a strongly acidic solution, colour B would be observed. (3)

[\mathrm{Ind^-}]

is greater than

[\mathrm{HInd}]

at the equivalence point. (4) In a weakly acidic solution, colour B would be observed.