Andrew Gatt | Bromothymol blue changing colors with only a breath @AndrewGatt | Uploaded September 2016 | Updated October 2024, 3 hours ago.
The carbon dioxide in the student's breath dissolves in the bromothymol blue solution. The carbon dioxide can react with the water and form carbonic acid, making the solution slightly acidic. Bromothymol blue will change to green and then yellow in acids.
The carbon dioxide in the student's breath dissolves in the bromothymol blue solution. The carbon dioxide can react with the water and form carbonic acid, making the solution slightly acidic. Bromothymol blue will change to green and then yellow in acids.
