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Phenolphthalein turns pink in barium hydroxide because barium hydroxide is a strong base, which raises the pH of the solution. In basic conditions (pH above 8.2), phenolphthalein changes from colorless to pink due to the deprotonation of its phenolic hydrogen, resulting in a conjugate base that absorbs light in the visible spectrum. This color change indicates the presence of hydroxide ions, which are characteristic of strong bases like barium hydroxide.
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Do bases turn phenolphthalein clear?
No, bases turn phenolphthalein pink or purple in color. Phenolphthalein is colorless in acidic solutions and turns pink in basic solutions with a pH higher than around 8.2.
What makes phenolphthalein turn alkali pink?
Phenolphthalein turns pink in the presence of a base or any solution with a ph over 7.
What colour would lime water turn in phenolphthaleln?
Lime water, which is a solution of calcium hydroxide, does not change color when phenolphthalein is added. Phenolphthalein is colorless in acidic solutions and turns pink in basic solutions. Since lime water is basic, it would typically show a pink color when phenolphthalein is present. However, if the lime water is sufficiently dilute, the color change may not be very pronounced.
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.
Why phenopthalein and milk of magnesia pink in colour?
Phenolphthalein turns pink due to its acidic pH, particularly in the presence of an acid. Milk of magnesia, which contains magnesium hydroxide, can turn pink when exposed to air due to slow oxidation of magnesium ions. This pink color change is not indicative of any chemical reaction or specific property of milk of magnesia.
What will be the color of phenolphthalein when added to a solution of hydroxide?
Phenolphthalein will turn pink or magenta in color when added to a basic solution containing hydroxide ions.
What happens when you mix Sodium hydroxide and phenolphthalein?
When you mix sodium hydroxide and phenolphthalein, you will observe a color change. Phenolphthalein is commonly used as a pH indicator, turning pink in basic solutions (such as sodium hydroxide) and colorless in acidic solutions. This color change is a result of the chemical reaction between the sodium hydroxide and phenolphthalein molecules.
What would happen if you added phenolphthalein to sodium hydroxide?
Phenolphthalein is a pH indicator that turns pink in basic solutions. When added to sodium hydroxide, which is a strong base, the phenolphthalein will turn pink to indicate that the solution is basic.
Is there a reaction between the ammonium hydroxide inside a plastic bag when immersed in a water with phenolphthalein?
If the phenolphthalein solution turns pink, that means that the plastic bag is permeable to ammonium hydroxide. If it remains colorless, then the plastic bag is not permeable to ammonium hydroxide. If the contents of the plastic bag turn pink, then the plastic bag is permeable to phenolphthalein. If everything remains colorless, then the bag is impermeable to both ammonium hydroxide and phenolphthalein.
What happens when you mix calcium hydroxide and phenolphthalein?
When you mix calcium hydroxide and phenolphthalein, the solution will turn pink or magenta in color. This color change indicates that the solution is basic, as calcium hydroxide is a strong base. Phenolphthalein is a pH indicator that changes color in the presence of bases.
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.
What is the chemical reaction of phenolphthalein and sodium hydroxide?
Phenolphthalein reacts with sodium hydroxide to form a pink color, indicating the presence of a base. The chemical reaction involves the deprotonation of phenolphthalein by hydroxide ions to form an ionized molecule with a pink hue.
Does Ammonia turns phenolphthalein in to pink?
No, ammonia does not turn phenolphthalein pink. Phenolphthalein is a pH indicator that turns pink in basic solutions, but ammonia is a weak base and typically does not have a strong enough pH to turn phenolphthalein pink.
Which Colour do alkali turn phenolphthalein?
Alkalis turn phenolphthalein pink or magenta.
What color does NaoH turn when phenolphthalein?
NaOH turns pink when phenolphthalein is added.
Why does Phenolphthalein turn pink in potassium hydroxide solution?
Oh, dude, it's like this chemical reaction party where Phenolphthalein gets all excited and turns pink when it hangs out with potassium hydroxide. It's because the potassium hydroxide is a strong base that steals hydrogen ions from the Phenolphthalein, making it change color. So yeah, it's just chemistry being all colorful and stuff.
What happens when sodium hydroxide is added dropwise to solution containg phenolphthalein?
When sodium hydroxide is added dropwise to a solution containing phenolphthalein, the solution will gradually turn pink as the pH increases. This color change is due to the phenolphthalein molecule shifting from its colorless form in acidic conditions to its pink form in basic conditions.
