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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. It belongs to the class of dyes known as phthalein dyes.
Does phenolphthalein neutralize acid?
Phenolphthalein is an indicator — a chemical which changes colour depending on whether it meets an acid or a base. It turns purple if it meets something basic, such as ammonia; it stays colourless if it meets an acid like vinegar or a neutral substance like water.
Why do you add phenolphthalein to the solution to be titrated in this experiment before beginning the titration?
In order to know when the equivalence point is reached, an indicator solution called phenolphthalein is added to the vinegar at the beginning of the titration. Phenolphthalein is a pH sensitive organic dye.
What happens when phenolphthalein is added to acidic solution basic solution and neutral solution?
Answer: It turns colorless in acidic solutions and red in basic solutions.
What happens when you add phenolphthalein to water?
Phenolphthalein is an acid indicator,means when we add water (pH 7) to it,it ionises giving a pink colour.
When adding acid to base the phenolphthalein indicator changes colour from Colourless to pink at the end of titration?
Phenolphthalein: Phenolphthalein is a chemical used as an indicator in acid-base solutions. In particular, phenolphtalein turns colorless when added to an acidic solution while this chemical turns pink when added to a basic solution.
When phenolphthalein indicator is added to a colorless?
Phenolphthalein is naturally colorless but turns pink in alkaline solutions. The compound remains colorless throughout the range of acidic pH levels but begins to turn pink at a pH level of 8.2 and continues to a bright magenta at pH 10 and above.
What happens if you add too much indicator to a titration?
If a large amount of indicator is used, the indicator will effect the final pH, lowering the accuracy of the experiment.
What was the purpose of adding phenolphthalein to the titration flask?
A commonly used indicator for strong acid-strong base titrations is phenolphthalein. Solutions in which a few drops of phenolphthalein have been added turn from colorless to brilliant pink as the solution turns from acidic to basic. The steps in a titration reaction are outlined below.
When phenolphthalein is added to a solution having pH 6 It gives?
What happens when phenolphthalein is added to acidic solution basic solution and neutral solution Class 7?
Hint: In a neutral solution, the phenolphthalein would give a light pink colour. When phenolphthalein is added to the base the colour of the solution intensifies and if it is added to an acidic solution the colour will fade away and become colourless.
Does the phenolphthalein indicator changes color close to the point of neutralization which shows the end point of the titration?
The end point of a titration is the point at which the indicator changes color. When phenolphthalein is the indicator, the end point will be signified by a faint pink color.