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it is a agar medium for Microbiology containing phenolphthalein biphosphate. It is used in Petri plates and detects the phosphatase character of microbial colonies but requires final addition of alkali to color the phenolphatlein and the color rapidly fades.
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∙ 11y ago
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∙ 14y agoAn acid-base indicator which produces no color in an acid solution but turns pink or red in an alkaline solution. Also used as a laxative.
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∙ 15y agoAn indicator used in titration to test basicity. An indicator used in titration to test basicity.
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∙ 13y agoPhenolphthalein solution is a synthetic indicator. Indicators are used to find out whether a solution is acidic or basic.
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∙ 9y agoph indicator for cell cultures
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Is phenolphthalein a compound?
Yes, phenolphthalein is a compound with the molecular formula C20H14O4.
What is phenolphthalein made of?
Phenolphthalein is made up of, H20, C14, O4,
Why is phenolphthalein indicator used?
Phenolphthalein is used as an indicator because the color of the solution is changed according to pH.
Why you are adding phenolphthalein as a indicator?
One would add phenolphthalein as an indicator for bases with a pH of 8.2 to 10.0 If the phenolphthalein changes color from colorless to pink or red, a base with a pH between the aforementioned pH values is present.
What is the action of sodium hydroxide on the colour of phenolphthalein?
Phenolphthalein is pink in basic solutions.Phenolphthalein is used as an indicator in volumetry - acid-base titration.
Which is more polar bromophenol blue or phenolphthalein?
phenolphthalein
What is phenolphthalein made of?
Phenolphthalein is made up of, H20, C14, O4,
Is phenolphthalein a compound?
Yes, phenolphthalein is a compound with the molecular formula C20H14O4.
What is the color of lime water when phenolphthalein is added into lime water?
The color is pink with phenolphthalein.
What happens when water is added to phenolphthalein?
Phenolphthalein dissolves in water to get a clear transparent solution.
When phenolphthalein is added to ammonium hydroxide is the color of the final solution is pink?
Phenolphthalein is an indicator often used in chemical titrations. Phenolphthalein is colorless in acidic solutions and turns pink in basic solutions. The more basic the solution the pinker the solution will become when Phenolphthalein is present.
Why phenolphthalein get colour on basic medium?
In a basic medium phenolphthalein changes color frompink to colorless.
Phenolphthalein goes what colour in a base?
Phenolphthalein turns pink in a base and turns colourless in a base
Phenolphthalein change color when mixed with hydrochloric acid?
No, phenolphthalein remains colourless in the presence of an acid.
What chemical reaction between the phenolphthalein and NaOH?
Phenolphthalein turns pink as NaOH is a strong alkali
Why does hydrochloric acid change phenolphthalein purple to colorless?
we know that hcl is an acid and acids change purple phenolphthalein to colourless. So HCL changes purple phenolphthalein to colourless
What would happen if I placed a Vial of phenolphthalein into a jar with ammonia?
Nothing will happen... but when you put a drop of the vial in the phenolphthalein, the phenolphthalein will turn into pink... It was just an observation that I saw in our experiment this afternoon
