A handbook lists the following data:

(a) Which of these indicators change color in acidic solution, which in basic solution, and which near the neutral point?

(b) What is the approximate pH of a solution if bromcresol green indicator turns green? if chlorphenol red turns orange?

Transcribed Image Text:

Indicator KHIn Bromphenol blue 1.4 x 10-4 Bromcresol green 2.1 x 10-5 Bromthymol blue 7.9 x 10-8 2,4-Dinitrophenol 1.3 x 10-4 Chlorphenol red 1.0 x 10-6 Thymolphthalein 1.0 × 10-10 Color Change Acid → Anion yellow → blue yellow → blue yellow → blue colorless →yellow yellow → red colorless → blue