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In a basic medium phenolphthalein changes color frompink to colorless.

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Q: Why phenolphthalein get colour on basic medium?
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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 indicator which has no color with the acidic medium?

Phenolphthalein and other indicators which themselves are weak acid show a colour change in basic medium (between pH value 7.1 to 14) so in acids they remain unchanged.


What is the colour of zinc ions mixed with ammonia in phenolphthalein indicator?

The phenolphthalein indicator is pink in basic solutions.


When a drop of phenolphthalein is introduced in barium hydroxide the solution turns what colour?

Phenolphthalein is pink in a basic environment.


What is the action of sodium hydroxide on the colour of phenolphthalein?

Phenolphthalein is pink in basic solutions.Phenolphthalein is used as an indicator in volumetry - acid-base titration.


What is the colour of phenolphthalein indicators in acidic and basic properties?

In acid conditions it is colorless and in basic conditions it is pink and then bright red


What does phenolphthalein mean in science?

Phenolphthalein is a chemical compound with the formula C20H14O4. It is coloured, and the colour changes in relation to the acidity of it environment. It turns colorless in acidic solutions and pink in basic solutions.


What is the colour of phenolphthalein in tap water?

Any colour appear.


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.


Phenolphthalein goes what colour in a base?

Phenolphthalein turns pink in a base and turns colourless in a base


What is the colour of phenolphthalein in lemon juice?

red


How does phenolphthalein work?

Phenolphthalein is an indicator that undergoes a colour change from colourless to pink that begins at a pH of 8.0. So in the titration your performing the phenolphthalein will start to change colour at the point when the moles of acid equal the moles of base. Although this colour change occurs at a pH of 8.0 and not at a pH of 7.0 phenolphthalein is commonly used because of the distinctive colour change that occurs. Phenolphthalein is colourless in acids and pink/purple in base. It also turns orange in very strong acids.