Table of Contents
- 1 Is bromothymol blue the same as bromophenol blue?
- 2 What can be substituted for bromothymol blue?
- 3 What is bromophenol blue indicator?
- 4 What color does Bromothymol blue turn in a base?
- 5 What are the main uses of bromothymol blue?
- 6 What is the pH of bromophenol blue?
- 7 What does the name Bromo mean in benzene?
Is bromothymol blue the same as bromophenol blue?
As a pH indicator, bromothymol blue, for example, would be useful between from about pH 6.0 to pH 7.6….
| Indicator | Bromophenol blue |
|---|---|
| Low pH color | yellow |
| Transition pH range | 3.0–4.6 |
| High pH color | purple |
What can be substituted for bromothymol blue?
If bromothymol blue is inhibitory or not sensitive enough to detect small pH changes, substitute with phenol red (0.01 g/l).
What color does phenolphthalein turn in a base?
Phenolphthalein is an indicator — a chemical which changes colour depending on whether it meets an acid or a base. It turns purple if it meets something basic, such as ammonia; it stays colourless if it meets an acid like vinegar or a neutral substance like water.
What is bromophenol blue indicator?
Bromphenol blue is an acid-base indicator since its useful range lies between pH 3.0 and 4.6. It changes from yellow at pH. 3.0 to blue at pH 4.6; this reaction is reversible. Bromophenol blue is structurally related to phenolphthalein (a popular. indicator).
What color does Bromothymol blue turn in a base?
Bromthymol blue is a weak acid. It can be in acid or base form, depending on the pH of the solution. This reagent is yellow in acidic solutions, blue in basic solutions and green in neutral solution.
What colour does methyl orange turn in base?
Methyl orange is a pH indicator frequently used in titration because of its clear and distinct color variance at different pH values. Methyl orange shows red color in acidic medium and yellow color in basic medium.
What are the main uses of bromothymol blue?
The main uses of bromothymol blue are for testing pH and for testing photosynthesis and respiration. Bromothymol blue has a blue color when in basic conditions (pH over 7), a green color in neutral conditions (pH of 7), and a yellow color in acidic conditions (pH under 7).
What is the pH of bromophenol blue?
Bromthymol blue changes color over a pH range from 6.0 (yellow) to 7.6 (blue). It is a good indicator of dissolved carbon dioxide (CO2) and other weakly acidic solutions. Is bromophenol blue hazardous?
What causes bromothymol blue to turn green?
It contains a pH indicator, bromothymol blue, which causes the medium to change from yellow to blue green; it contains antimicrobial agents, chloramphenicol and chlortetracycline, and an antimycotic agent, cycloheximide.
What does the name Bromo mean in benzene?
The second and third benzene rings each have a bromine (the ‘bromo’ part of the name), an alcohol (the ‘ol’ suffix), a tert-butyl group, and a methyl group. The name ‘bromothymol’ does indicate the structure for several parts of the molecule, but not the entire molecule like the IUPAC name does.