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Acid Base Indicator Tests

Total questions: 8

Worksheet time: 8mins

Name
Class
Date
1.

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

a)

bromcresol green

b)

bromthymol blue

c)

thymol blue

d)

methyl orange

2.

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

a)

solution where bromthymol blue is blue

b)

solution where bromcresol green is blue

c)

solution where phenolphthalein is pink

d)

solution where methyl orange is red

3.

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

a)

methyl orange

b)

bromthymol blue

c)

bromcresol green

d)

thymol blue

4.

In which solution will thymol blue indicator appear blue?

a)

0.1 M CH3COOH

b)

0.1 M KOH

c)

0.1 M HCl

d)

0.1 M H2SO4

5.

According to reference table M, what is the color of the indicator methyl orange in a solution that has a pH of 2?

a)

blue

b)

yellow

c)

orange

d)

red

6.

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

a)

HCl

b)

HC2H3O2

c)

NaOH

d)

CH3OH

7.

An aqueous solution turns litmus red. The pH of this solution could be

a)

14

b)

11

c)

8

d)

5

8.

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

a)

4.7

b)

6.0

c)

7.8

d)

9.9