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Phenol red acts as the pH indicator. Turning yellow as the ph lowers (acidic environments) and deep red when the ph is high (alkaline environment)
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What is the purpose of phenol red or bromcresol purple in fermentation tube?
These are both used as pH indicators.
Does phenol red change baking soda to red?
Phenol red is a pH indicator. The baking soda is not changing color, but the phenol red is.
Is phenol red is a strong base and acids?
Phenol red is a weak acid.
Is phenol red toxic?
no
What color is phenol red at a neutral?
Phenol red is made by condensation of Phenol and saccharine.pH below 6.8 = YellowpH above 8.2 = Red/FuschiaGradually turns from yellow to red/fuschia (pH between 6.8 and 8.2 = Pinkish)
Explain the purpose of the phenol red in the medium?
To determine if a bacterium can ferment a particular carbohydrate and determine the end products of that fermentation
Explain the function of phenol red in the urea broth medium?
phenol red act as the pH indicator. As the substrate urea is split into products, the presence of ammonia caused alkaline environment that cause the phenol red to turn to deep pink. Useful to test Proteus vulgaris.
What is the purpose of phenol red or bromcresol purple in fermentation tube?
These are both used as pH indicators.
Does phenol red change baking soda to red?
Phenol red is a pH indicator. The baking soda is not changing color, but the phenol red is.
Is phenol red is a strong base and acids?
Phenol red is a weak acid.
What state of matter is phenol red solution?
A solution of phenol red is a liquid.
Is phenol red toxic?
no
What color is phenol red at a neutral?
Phenol red is made by condensation of Phenol and saccharine.pH below 6.8 = YellowpH above 8.2 = Red/FuschiaGradually turns from yellow to red/fuschia (pH between 6.8 and 8.2 = Pinkish)
What color is phenol red dropped into distilled water?
red
What reaction do you get when you mix phenol red with acids and bases?
Phenol red is yellow under pH=6,8 and pink over a pH=8,2.
How do you make a solution of phenol red?
Boil red cabbage in water to make phenol red. This works well depending on how long you boil it will determine the strength of the solution.
What is the chemistry of the reaction between phenol and ferric chloride in Alkali medium?
the brawn colour is formed and this is due to the presece of the OH functional froup found in the phenol.
