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Phenolphthalein is a pH indicator that turns pink in basic solutions. In the presence of an alkyne, which is typically non-basic, phenolphthalein would remain colorless if the alkyne is not deprotonated to form a basic solution. However, if the alkyne is reacted with a strong base, it could lead to a color change to pink due to the formation of an enolate ion or a similar basic species.
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What is the colour of phenolphthalein in salt water?
It will turn purple
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 color would phenoplhthalein turn if drano was added?
Phenolphthalein would turn pink when added to Drano, which is a strong alkaline substance. This color change indicates that the solution has become basic.
When you add an acid to an alkali it changes to a neutral which colour change would this show with an indicator?
It depends on the indicator and there are quite a few. Methyl Red, Methyl orange and Phenolphthalein are 3 such acid-base indicators. If phenolphthalein is used as the indicator and added to the base it would immediately turn red/pink. As acid is titrated in, the red/pink will disappear and go colorless.
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.
Which Colour do alkali turn phenolphthalein?
Alkalis turn phenolphthalein pink or magenta.
What color does ammonia turn when phenolphthalein is added?
Ammonia will turn pink when phenolphthalein is added, indicating that the solution is basic.
What is the colour of phenolphthalein in salt water?
It will turn purple
What colour would phenolphthalein go if added to borax solution?
Phenolphthalein would turn pink in a borax solution, indicating the solution is basic. Borax acts as a weak base in solution and would cause phenolphthalein to change color due to its alkaline nature.
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
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 colour would a mixture thymol blue and phenolphthalein go if sodium hydroxide was added?
The mixture would turn from yellow to blue as the pH increases with the addition of sodium hydroxide. Thymol blue changes color from yellow to blue in basic solutions, while phenolphthalein remains colorless in basic solutions.
Will phenolphthalein turn pink in coca-cola?
No, Coke would have to have a PH of more than 10 to turn pink. Coke only has a PH of 3
What colour does tomato juice turn phenolphthalein?
The litmus paper turns Orange. Because it has a pH of 4 so it's orange. :)
What colour does hydrochloric acid turn phenolphthalein?
It should be clear. Phenolphthalein doesn't change color in the presence of an acid, only a base.
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.
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.
