Bromothymol blue or bromothymol sulfonephthalein or BTB is a yellow-colored indicator dye that changes color when an acid is present. On the other hand, carbon dioxide, when added to a solution, produces carbonic acid, which lowers the pH. This pH change can be used to assess a variety of things and has numerous clinical applications. Bromothymol blue is a acid-base indicator commonly used to determine the presence of carbonic acid in a liquid.
Explain what does bromothymol blue indicates the presence of?
The BMB turns yellow when the pH is less than 6, it is green when the pH is between 6 to 7.6, and blue when the pH is greater than 7.6.
What caused the bromothymol blue solution to change color?
Due to the chemical interaction with carbon dioxide, the bromothymol blue solution changed color.
What does it mean when BTB turns green?
Bromothymol blue shows green in a neutral solution, which means the pH of the solution is around pH 07.00. So, if we are looking at the reaction to a change in pH, we can see the color change when the pH changes.
How long does it take for bromothymol blue to turn yellow?
Generally, 15 to 30 minutes takes for bromothymol blue to turn yellow, and in the titration process, it will depend on the concentration of titrand and titrant.
What color does BTB turn when carbon dioxide is present?
Bromothymol blue indicator turns yellow when carbon dioxide is present, more carbon dioxide is indicated by the color yellow. It turns blue when there is little or no carbon dioxide present.
What color does bromothymol blue turn in water?
Because the pH of water is neutral, bromothymol blue turns green in the water. BTB is a weak acid it shows yellow in acidic solutions, blue in basic solutions, and green in neutral solutions.
What happens when bromothymol blue is added to a base?
When bromothymol blue is exposed to basic conditions (pH more than 7) it turns blue because photosynthesis occurs, carbon dioxide is used up and the pH increases, making the solution bluer.
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