How does bromothymol blue act as an indicator for carbon dioxide? What evidence do you have to support your conclusion?

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Explanation:

Breathing through a straw into a solution of bromothymol blue can be used to quantify carbon dioxide generation (BTB). BTB is an acid indicator that changes colour from blue to yellow when exposed to acid. The sooner you breathe carbon dioxide into the BTB solution, the faster it becomes yellow.

Bromothymol blue (BMB) is a yellow indicator dye that changes colour when exposed to acid. When carbon dioxide is introduced to a solution, it converts to carbonic acid, which lowers the pH. When the pH is more than 7.6, green when the pH is between 6-7.6, and yellow when the pH is less than 6. BMB is blue when the pH is greater than 7.6, green when the pH is between 6-7.6, and yellow when the pH is less than 6.

The bromothymol blue solution dissolves the carbon dioxide in the student's breath. Because carbon dioxide reacts with water to create carbonic acid, the solution becomes somewhat acidic. In acids, bromothymol blue becomes green and eventually yellow.

A pH indicator is bromothymol blue (also known as bromothymol sulfone phthalein or BTB). It's most commonly employed in applications that require measuring substances with a pH that's close to neutral. The presence of carbonic acid in a liquid is A classic method.

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!