Acid-Base Indicator Color Changes

The video tutorial by Highsmith's Renkin covers acid-base indicators, focusing on their color changes in different pH ranges. It explains the use of Table M to identify indicators like methyl orange, bromothymol blue, litmus, cresol green, and phenolphthalein. The tutorial also includes problem-solving examples to apply this knowledge, emphasizing the importance of understanding pH ranges for accurate color predictions.

What is the primary focus of acid-base indicators?

• To determine the density of a solution

• To measure temperature changes

• To indicate a chemical change through color

• To add color to solutions

What color does methyl orange turn in a solution with a pH below 3.1?

• Yellow

• Blue

• Red

• Green

At what pH does bromothymol blue change from yellow to blue?

• Above 7.6

• Below 6

• Between 6 and 7.6

• Above 8

What color does litmus paper turn in a solution with a pH above 8.3?

• Blue

• Green

• Red

• Yellow

What is the color of Kressel green in a solution with a pH above 5.4?

• Yellow

• Blue

• Colorless

• Red

What is the color of phenolphthalein in a solution with a pH of 6?

• Pink

• Colorless

• Blue

• Yellow

What color does phenolphthalein turn in a solution with a pH of 11?

• Pink

• Blue

• Colorless

• Yellow

Which indicator will be yellow at a pH of 10?

• Phenolphthalein

• Methyl orange

• Kressel green

• Bromothymol blue

What is the color of bromothymol blue in a solution with a pH of 5?

• Green

• Blue

• Red

• Yellow

Which indicator turns blue in a solution with a pH above 9.6?

• Kressel green

• Bromothymol blue

• Phenolphthalein

• Methyl orange