pH Unknown

Click an indicator to use to test the pH of your unknown. When you have determined the pH click the value on the pH scale.

Indicator

pH Color Change

Thymol Blue

1 - 2

Methyl Orange

4 - 5

Methyl Red

4 - 6

Bromthymol Blue

7 - 8

Phenolphthalein

8 - 10

Alizarin

10 - 12

Indigo

13 - 14


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