Consider the acid-base indicator, HIn, featured below:
Hln (aq) + H2O (l) ⇌ In– (aq) + H3O+ (aq) K a = 1.0 x 10–4
Which of the following statements regarding this indicator is FALSE?
(a) The indicator gradually changes color over a pH range of ~ 3-5.
(b) The predominant color of the indicator in its acid range is yellow.
(c) At its end point, the indicator will appear orange.
(d) When placed in a neutral solution (at 25°C), the indicator will appear red.
(e) This indicator is suitable to use in a titration involving a weak acid with a strong base.