The Three Common Indicators
Want to see some colorful liquids in test tubes? Then, you came to the right place to learn some chemistry and to see the beautiful colors. We’re going to learn about the three common PH indicators.
In these test tubes there is vinegar, water, and borax. So that means we’ve acid to base.
Some PH indicators have ranges. For example, phenolphthalein’s lowest range is 3.0 PH which is acid, but if you put phenolphthalein in an acid that is 2 PH, the same color will show. If you don’t know what I’m taking about click here.
Phenolphthalein (PH 8.3 – 10): You probably saw me using this chemical several times. Let’s see what will happen to this.
Acid: no color Neutral: no color Base: pink
Methyl orange (PH 3.1 – 4.4):
Acid: red Neutral: orange Base: orange
Bromothymol blue (PH 6 – 7.6):
Acid: yellow Neutral: green Base: blue