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Phenolphthalein is a compound with chemical formula of C20 H14 O4. It is colorless but turns pink in alkaline solutions. This is because it undergoes a process of ionization where positively or negatively charged ions are added or removed from a molecule, which converts the molecule into ions. Phenolphthalein molecule contains positively charged hydrogen ions and is naturally colorless with bright pink ions. When exposed to an alkaline solution, these hydrogen ions are removed, phenolphthalein molecule gets ionized and the solution turns pink. The stronger is the alkali solution, more hydrogen ions removed and stronger pink colour of the phenolphthalein solution.
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Phenolphthalein change color when mixed with hydrochloric acid?
Phenolphthalein is a pH indicator that changes color in response to a change in pH. When mixed with hydrochloric acid (a strong acid), phenolphthalein will turn colorless due to the decrease in pH, indicating an acidic solution.
What color is phenolphthalein in alkaline solutions?
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What are the names of the indicators that tell us if something was acid or alkaline?
The indicators that tell us if a substance is acidic or alkaline include litmus paper, pH paper, universal indicator solution, and phenolphthalein. These indicators change color based on the pH of the substance they are in contact with, helping to determine if it is acidic or alkaline.
What is the phenolphthalein color of baking soda?
Phenolphthalein is a pH indicator that turns pink in alkaline solutions with a pH greater than 8.2. Baking soda (sodium bicarbonate) is basic, so when phenolphthalein is added to a solution containing baking soda, it will turn pink.
What color does phenolphthalein change in bases?
For solutions with a pH higher than 8.2, phenolphthalein turns bright pink.
What color will it be if you have a high pH?
It depends on the substance. For instance, water will see no color change.
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.
Phenolphthalein change color when mixed with hydrochloric acid?
Phenolphthalein is a pH indicator that changes color in response to a change in pH. When mixed with hydrochloric acid (a strong acid), phenolphthalein will turn colorless due to the decrease in pH, indicating an acidic solution.
What color is phenolphthalein in alkaline solutions?
usually mr potato man will act uppon his words given but if not he is most likely plotting to kill you brutally
What are the names of the indicators that tell us if something was acid or alkaline?
The indicators that tell us if a substance is acidic or alkaline include litmus paper, pH paper, universal indicator solution, and phenolphthalein. These indicators change color based on the pH of the substance they are in contact with, helping to determine if it is acidic or alkaline.
What is the phenolphthalein color of baking soda?
Phenolphthalein is a pH indicator that turns pink in alkaline solutions with a pH greater than 8.2. Baking soda (sodium bicarbonate) is basic, so when phenolphthalein is added to a solution containing baking soda, it will turn pink.
What color does phenolphthalein change in bases?
For solutions with a pH higher than 8.2, phenolphthalein turns bright pink.
Why there is no colour change when phenolphthalein is added to the oxalic acid?
Oxalic acid is a weak acid and phenolphthalein is a pH indicator that changes color in the pH range of 8.2 to 10. Oxalic acid solutions typically have a pH below the range where phenolphthalein changes color, so there is no visible change when phenolphthalein is added to oxalic acid.
What is the original colour of phenolphthalein?
Orange. It turns colourless in acids and pink in alkaline.
The true equivalence point in these titration was at pH7 What is the pH range for the color change of phenolphthalein?
Phenolphthalein changes color in the pH range of approximately 8.2 to 10.0. This means that phenolphthalein starts to turn pink around pH 8.2 and turns completely pink at around pH 10.0. Since the equivalence point was at pH 7, phenolphthalein would not be the ideal indicator for this titration.
Why does hydrochloric acid change phenolphthalein purple to colorless?
Hydrochloric acid is a strong acid that neutralizes the alkaline properties of phenolphthalein, turning it colorless. This reaction occurs because the acid donates hydrogen ions, causing a shift in the pH balance and resulting in the loss of the pink or purple color in phenolphthalein.
What color change the occur when phenolphthalein is put into the base?
Phenolphthalein changes from colorless to pink in a basic solution. This color change occurs because phenolphthalein is a pH indicator that is clear in acidic solutions and pink in basic solutions with a pH above 8.2.
