Phenolphthalein is an acid base indicator. what color does it possess in the presence of excess hydrogen (i. e., hydronium) ions?

Colourless

Explanation:

Phenolphthalein is an acid-base indicator and is commonly employed in acid-base titration experiments.

Phenolphthalein is weakly acidic. Its ions are pink in colour whereas the molecule is colourless.

When phenolphthalein is in the presence of excess hydrogen ions i.e. in an acidic solution, its colour is colourless because it retains its molecular state (because it is itself an acid) but when it is in the presence of a basic solution it dissociates into ionic form to neutralize the excessive hydroxide ions of base and therefore the solution turns pink.

here is table 2-2:

country

percent of eligible voters that voted

rank

united states

44.9%

138

canada

60.1%

107

costa rica

84.6%

14

hungary

66.9%

82

japan

57.0%

118

egypt

27.7%

159

south africa

85.5%

10

ans is no, the data set cannot be plotted as a single circle graph

0.88m hope i am correct : )