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Colour of phe...

Question

Colour of phenolphthalein solution changes to _______ on addition of a base.

A

blue

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B

pink

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C

yellow

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D

green

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Solution

The correct option is B pink

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Similar questions

Q. In acidic solution, phenolphthalein gives a pink colour. The basic solution containing phenolphthalein is colourless.

Q. Amisha has two solutions labelled 'A' and 'B'. On addition of phenolphthalein to each of them, solution A gives a pink colour, and solution B remains colourless. What can be determined about the nature of the solutions from the above observations?

Q. Amisha has two solutions labelled 'A' and 'B'. On addition of phenolphthalein to each of them, solution B turns colourless and solution A gives pink colour. What can be determined about the nature of the solutions from the above observations?

Q. Two drops of phenolphthalein solution was added to

40.0 m L

H C l

solution. This solution was titrated with

0.10 M

N a O H

30.0 m L

of base had been added, part of the solution turned pink; but the colour disappeared upon mixing the solution. Addition of

N a O H

solution was continued dropwise until one drop addition produced a lasting pink colour. At this point, the volume of base added was

32.56 m L

. Calculate:
(i) The concentration of

H C l

solutions
(ii) Concentration of

H C l

in solution when

30.0 m L

base had been added.

Q. Which of the following substances would change the colour of the solution, if a substance is added to a solution containing two drops of phenolphthalein resulting the solution becomes pink?

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