bromothymol blue
Definition
- Noun:
- A dye used as an acid-base indicator: Bromothymol blue is a chemical compound that changes color depending on the acidity or alkalinity (pH) of a solution it is added to. It is commonly used in laboratories and educational settings to test whether a substance is an acid or a base.
Usage Examples
- Noun:
- The scientist added a few drops of bromothymol blue to the liquid to determine its pH.
- In the experiment, bromothymol blue turned yellow, indicating an acidic solution.
- Bromothymol blue is a standard indicator for testing carbon dioxide in breath.
Advanced Usage
- "to test with bromothymol blue": to use this specific dye to determine the pH of a substance.
- The students were instructed to test each solution with bromothymol blue.
- "a solution of bromothymol blue": the dye prepared in a liquid form, ready for use.
- The teacher prepared a fresh solution of bromothymol blue for the class.
Variants and Related Words
- BTB: A common abbreviation for bromothymol blue.
- The lab manual listed the required materials as "BTB" and test tubes.
- pH indicator: The general category of substances to which bromothymol blue belongs.
- Litmus paper and bromothymol blue are both types of pH indicators.
Synonyms
- Acid-base indicator: A substance that shows a color change in response to pH.
- pH dye: A dye used to visually determine pH levels.
Related Phrases
(Note: As a specific chemical noun, bromothymol blue does not have phrasal verbs or idioms in common usage.)
Noun
-
a dye used as an acid-base indicator
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