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The pH of phenol varies in water and glycerin due to differences in their solvent properties. Water, being a polar solvent, can facilitate the ionization of phenol, leading to a lower pH because phenol can donate protons (H⁺ ions). In contrast, glycerin is a less polar solvent and has a higher viscosity, which reduces the solubility and ionization of phenol, resulting in a higher pH. Thus, the solvent's characteristics significantly influence phenol's acidity and its behavior in solution.
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What color is phenol red dropped into distilled water?
Phenol red dropped into distilled water would give a red color. The color of phenol red varies with the pH: it is yellow below pH 6.8, red at pH 7.4, and pink or purple at pH above 8.2.
What is the PH of liquid phenol?
The pH of liquid phenol is typically around 6 to 7, indicating that it is slightly acidic. However, phenol can act as a weak acid, and its pH can vary depending on its concentration and the presence of other substances. In concentrated solutions, phenol may exhibit a lower pH due to its acidic properties.
What is the PH of Glycerin?
Glycerin, also known as glycerol, is a neutral compound with a pH typically around 7, making it neither acidic nor basic. However, the pH can vary slightly depending on the purity and concentration of the glycerin. In solution, glycerin does not significantly affect the acidity or alkalinity of the mixture.
What color is phenol red at neutral pH?
Phenol red is a red color at neutral pH. It changes color depending on the pH of the solution it is in.
When using the phenol red carbohydrate broth fermentation test at what pH is the pH indicator yellow?
The pH indicator phenol red turns yellow in the fermentation test when the pH drops below 6.8, indicating acid production from fermentation.
What color is phenol red dropped into distilled water?
Phenol red dropped into distilled water would give a red color. The color of phenol red varies with the pH: it is yellow below pH 6.8, red at pH 7.4, and pink or purple at pH above 8.2.
Is water more acidic than phenol?
No, water is neutral with a pH of 7. Phenol is slightly acidic with a pH range between 5 and 6.
What color is phenol red at an acid pH?
Phenol red is yellow at an acid pH.
What is the PH of liquid phenol?
The pH of liquid phenol is typically around 6 to 7, indicating that it is slightly acidic. However, phenol can act as a weak acid, and its pH can vary depending on its concentration and the presence of other substances. In concentrated solutions, phenol may exhibit a lower pH due to its acidic properties.
Suggest a chemical test(s) to distinguish ethanol and phenol. Include the reagents reaction conditions and observations. And the equation?
Phenol solution, or phenol directly from the manufacturer?If the phenol is in the form it comes in from the factory, no chemical test is necessary. Phenol is a white crystalline solid.If it's dissolved in water, the easiest test is pH. Phenol solution is more acidic than ethanol. So...whatever you use for a pH test will do ya.
Phenol red dropped into distilled water would produce what color?
Phenol red in distilled water would produce a red color. This is because phenol red is a pH indicator that changes color based on the acidity of the solution. In neutral to basic solutions, phenol red appears red.
What is the PH of Glycerin?
Glycerin, also known as glycerol, is a neutral compound with a pH typically around 7, making it neither acidic nor basic. However, the pH can vary slightly depending on the purity and concentration of the glycerin. In solution, glycerin does not significantly affect the acidity or alkalinity of the mixture.
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.
What color is phenol red at neutral pH?
Phenol red is a red color at neutral pH. It changes color depending on the pH of the solution it is in.
Does phenol red change baking soda to red?
Phenol red is a pH indicator that changes color in response to pH changes. It turns yellow in acidic conditions and red in basic conditions. When added to a solution containing baking soda (sodium bicarbonate), which is a basic substance, phenol red can turn red.
What is the role of glycerin pH in skincare products and how does it affect the overall effectiveness of the product?
Glycerin pH in skincare products helps maintain the skin's natural acidity level, which is important for skin health. The pH level of glycerin can affect how well it hydrates and protects the skin. A balanced pH level in glycerin can enhance the effectiveness of the skincare product by ensuring it is gentle and compatible with the skin.
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)
