PH Indicators - Chemistry LibreTexts
Introduction
pH indicators exist as liquid dyes and dye-infused paper strips. They are added to various solutions to determine the pH values of those solutions. Whereas the liquid form of pH indicators is usually added directly to solutions, the paper form is dipped into solutions and then removed for comparison against a color/pH key.
| pH | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Color |
Very Acidic Acidic Neutral Basic Very Basic
See Figure 1 and 2 to see a color range (1) of a universal indicator (2).
Từ khóa » Ph 5 7 - 6 8
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