Quick Answer: When A Drop Of Phenolphthalein Is Added To Solution A It Turns Pink The Solution A Is?

What happens when a few drops of phenolphthalein are added to an acidic solution?

Answer: We all know that phenolphthalein gives no colour when added to an acidic solution.

Phenolphthalein is an acid indicator,means when we add water (pH 7) to it,it ionises giving a pink colour.

If concentration of is greater than that of then the solution will be colourless..

What happens when phenolphthalein is added to Naoh?

Explanation: When the sodium hydroxide, which is a base, is mixed with phenolphthalein, it turns pink. … This happens because the base is neutralized in an acid solution, which causes the indicator to become colorless. All of the base is neutralized by the citric acid.

Why will the phenolphthalein eventually fade?

If excess base is present at the end of an acid-base titration, the pink phenolphthalein color fades if the solution is allowed to stand for a while. This slow fading is of no consequence to the titration.

When 4 drops of phenolphthalein are added to hydrochloric acid What is the solution?

Answer. Phenolphthalein is an indicator which is colourless in acidic medium and pink in basic medium. Since Hydrochloric acid is an acid,the solution will turn Colourless.

What will be the effect of adding phenolphthalein to an acidic solution?

Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions.

Why is phenolphthalein the best indicator?

A strong acid- strong base titration is performed using a phenolphthalein indicator. Phenolphtalein is chosen because it changes color in a pH range between 8.3 – 10. It will appear pink in basic solutions and clear in acidic solutions.

At what pH does phenolphthalein change color?

8.3 and 10.51. The change of color occurs over quite a limited range of pH―roughly pKa ± 1. In other words the color of phenolphthalein changes perceptibly between about pH 8.3 and 10.5.

Is phenolphthalein a base or acid?

Phenolphthalein, (C20H14O4), an organic compound of the phthalein family that is widely employed as an acid-base indicator. As an indicator of a solution’s pH, phenolphthalein is colourless below pH 8.5 and attains a pink to deep red hue above pH 9.0.

What does it mean when phenolphthalein turns pink?

Phenolphthalein, an acid-base indicator used to test the pH of a solution, turns pink due to the presence of a weak base. The indicator itself is a weak, colorless acid that forms pink anions when it dissolves in water. Although the anions are pink, the solution remains colorless in the presence of an acid.

Does the Colour of phenolphthalein reappear?

Phenolphthalein is basic indicator which remain colorless in acidic and neutral solution and turns pink or magenta in basic solution. … (iii) If few drops of NaOH is added again to the same solution, the solution become basic and the pink color of the phenolphthalein reappears.

What color is phenolphthalein in an acidic solution?

PinkOther indicatorsIndicatorAcidicAlkalineMethyl orangeRedYellowPhenolphthaleinColourlessPink

What color would a phenolphthalein solution be at pH 11?

PinkSo, At pH = 11 phenolphthalein solution gives Pink Color.

When few drops of phenolphthalein are added to a dilute solution of sodium hydroxide?

When few drops of phenolphthalein are added to dilute solution of sodium hydroxide a pink colour is produced .

What happens when a few drops of phenolphthalein is added to lime juice?

a drop of phenolphthalein is added to lime water ( that is calcium hydroxide ) then the solution will turn colourless to pink colour showing that the lime water is basic in nature.

Why does the pink color disappear in a titration?

The pink colour disappears in the titration because it is an indication that the reaction is reaching its endpoint and the reaction between the titrant and the sample are complete.

Which of the given solution will turn pink on adding a drop of phenolphthalein?

(b) Solution A gives pink colour when a drop of phenolphthalein indicator is added, therefore A is a base. Solution B gives red colour when a drop of methyl orange is added to it, therefore B is an acid. Hence, solution A will have less concentration of hydrogen ion than B.

What does it mean when your solution turns light pink in a titration using phenolphthalein as the indicator?

In the chemistry laboratory, phenolphthalein is mostly used in acid-base titrations. … When the solution turns from colorless to pink (or vice versa), the titration or neutralization point has been reached, and the unknown concentration may be calculated. In the past, phenolphthalein has been used as a laxative.

What happens when two drops of phenolphthalein?

When few drops of phenolphthalein are added to a dilute solution hydroxide a pink colour is produced.

When a few drops of phenolphthalein indicator are added to an acidic solution what will be the change in Colour of the solution?

Solution : Phenolphthalein acquires pink colour in sodium hydroxide solution because of its basic nature. On adding excess of HCl, the solution will become acidic and the solution will change colour from pink to colourless.

What happens when two drops of phenolphthalein are added to a dilute solution of NaOH?

Phenolphthalein remains colourless in neutral or acidic solution but turns out magenta or pink in basic solutions. When it is added to NaOH, the solution has the colour of pink since sodium hydroxide is a strong base.