Chem H Post-Lab Analysis pH Indicators

What does it mean when blue litmus paper turns red in a solution?

• The solution is basic

• The solution is acidic

• The solution is neutral

• The litmus paper is faulty

Tags

NGSS.MS-PS1-2

What does it mean when blue litmus paper remains blue in a solution? (2 answers)

• The solution is basic

• The solution is acidic

• The solution is neutral

• The litmus paper is faulty

What does it mean when red litmus paper stays red in a solution?

• The solution is basic

• The solution is acidic

• The litmus paper is faulty

When dipped in a solution...

A red litmus paper turned blue while a blue litmus paper turned red. What does it mean?

• The solution is basic

• The solution is acidic

• The solution is neutral

• The litmus paper is faulty

Tags

NGSS.MS-PS1-2

When dipped in a solution...

The color of both red and blue litmus paper remained unchanged. What does that mean?

• The solution is basic

• The solution is acidic

• The solution is neutral

• The litmus paper is faulty

When dipped in a solution...

The color of both red and blue litmus paper changed to blue. What does that mean?

• The solution is basic

• The solution is acidic

• The solution is neutral

• The litmus paper is faulty

Tags

NGSS.MS-PS1-2

In your lab, which chemical most likely caused blue litmus paper to remain blue? (2 answers)

• water

• sulfuric acid

• vinegar

• laundry detergent

The problem of using only litmus paper to test the pH of a solution is that it simply tells whether a solution is...

• acidic or basic

• strong acid or strong base

• weak acid or weak base

• neutral

Which pH indicator is useful in determining the approximate pH of a solution?

• red litmus paper

• blue litmus paper

• cabbage juice

When using a cabbage juice as a pH indicator, what does a purple color usually suggest?

• strong acid

• strong base

• weak acid

• weak base