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What is the color of phenolpthalein in?
Phenolphthalein is colorless in acidic solutions and pink in basic solutions.
Can phenolpthalein solution be used to prove that toothpaste is a base?
Phenolphthalein changes from colorless to pink in the range of pH 8.2 - 10. If toothpaste has a pH that is below this range, phenolphthalein will not indicate the basicity. if the pH is higher, which I believe it is in most (some) toothpastes, then phenolphthalein can be used, because it will turn from colorless to pink.
What color does phenolpthalein turn in the presenc of an acid?
Phenolphthalein only gives colour to bases with a pH above approximately 8.2-10. Then it gives a pink colour. As HCL is a strong acid it becomes colourless.
Why the water sample remains colorless or change to pink upon addition of phenolpthalein indiactor in total alkanilty expt?
In a total alkalinity experiment, the water sample may remain colorless or change to pink upon the addition of phenolphthalein indicator based on the pH of the water sample. If the water sample is acidic (pH below 8.3), phenolphthalein will remain colorless. If the water sample is basic (pH above 8.3), phenolphthalein will turn pink due to the presence of hydroxide ions, indicating the total alkalinity of the water.
What colors do litmus paper and phenolpthalein turn in presence of an acid or of base?
Litmus paper: red color in acidic solutions and blue color in basic solutions.Phenolphthalein: no color in acidic solutions.
What is the color of phenolphthalein in solutions with pH values ranging from 2 to 6?
Phenolphthalein is colorless in acidic solutions with a pH below 8, and turns pink in basic solutions with a pH above 8. In solutions with pH values ranging from 2 to 6, phenolphthalein would remain colorless.
What is the colour of chloroform when heated?
Chloroform is a colorless liquid at room temperature. When heated, it may turn to a colorless gas.
What colour would a mixture of thymol blue and phenolpthalein when adding sodium hydroxide?
The color of the mixture would depend on the specific concentrations and pH levels. Thymol blue transitions from yellow to blue with increasing pH, while phenolphthalein transitions from colorless to pink. It's likely that the mixture would show a combination of both yellow/blue and colorless/pink depending on the pH range reached with sodium hydroxide.
What are the colorless bumps on the face that turn red if you squeeze them and have puss in them?
Pimples. Lari_xox_173
When alkenes react with bromine water what colour do they change to?
They turn from orange to colorless.
What color does a lead nitrate and zinc solution turn into?
Lead nitrate is colorless, as are zinc ions. So it doesn't "turn into" any color.
What color does white turn when bleached?
When bleached, white turns a lighter shade or becomes colorless.
