bromothymol blue

Thân thiện

A student adds bromothymol blue to a clear liquid in a beaker.

Definition

1. 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.)

Học thuật

Noun

1. a dye used as an acid-base indicator

Từ đồng nghĩa

• bromthymol blue