Just so, what is the pH range for Bromothymol blue?
Bromothymol blue is effective when used at a pH range of 6.0-7.6.
Similarly, why did the color of the Bromothymol blue change? The bromothymol blue solution changed color because there was a chemical reaction with the carbon dioxide. After the exercising the bromothymol blue turned green faster. This is because the carbon dioxide was expelled into it faster, because of the exercising.
Considering this, what Colour is Bromothymol blue in base?
| Indicators | Acid Colour | Base Colour |
|---|---|---|
| Bromothymol blue | yellow | blue |
| Phenol red | yellow | red |
| Brilliant yellow | yellow | orange |
| Cresol red | yellow | red |
What do the colors of BTB indicate?
Bromothymol blue (BMB) is an indicator dye that turns yellow in the presence of acid. When carbon dioxide is added to the solution, it creates carbonic acid, lowering the pH of the solution. 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.