Using Table M

Indicators are substances that changes color when exposed to solutions with different pH values.

• True

• False

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

• colorless

• pink

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

• yellow

• blue

Which indicator is blue in a solution that has a pH of 5.6?

• bromcresol green

• bromthymol blue

• thymol blue

• methyl orange

Based on the results of testing colorless solutions with indicators, which solution is most acidic?

• solution where bromthymol blue is blue

• solution where bromcresol green is blue

• solution where phenolphthalein is pink

• solution where methyl orange is red

Tags

NGSS.MS-PS1-2

Which indicator is yellow in a solution with a pH of 9.8?

• methyl orange

• bromthymol blue

• bromcresol green

• thymol blue

In which solution will thymol blue indicator appear blue?

• 0.1 M CH₃COOH

• 0.1 M KOH

• 0.1 M HCl

• 0.1 M H₂SO₄

A compound whose water solution conducts electricity and turns phenolphthalein pink is

• HCl

• HC₂H₃O₂

• NaOH

• CH₃OH

Tags

NGSS.MS-PS1-2

Three samples of the same solution are tested, each with a different indicator. All three indicators, bromthymol blue, thymol blue and bromcresol green appear blue if the pH of the solution is

• 4.7

• 6.0

• 7.8

• 9.9

Tags

NGSS.MS-PS1-2

What is the color of bromocresol green in a solution with pH 4.5?

• yellow

• green

• blue