What happens when sodium hydroxide is added to phenolphthalein?
What happens when sodium hydroxide is added to phenolphthalein?
∙ When few drops of phenolphthalein indicator is added to sodium hydroxide solution, the solution turns deep pink. Phenolphthalein indicator shows pink color in basic solution.
What color does phenolphthalein turn in sodium hydroxide?
pink
Phenolphthalein is an indicator of acids (colorless) and bases (pink). Sodium hydroxide is a base, and it was in the pitcher at the beginning, so when added to the phenolphthalein in beakers 2 and 4, it turned pink (top half of the graphic).
Why does NaOH turn pink when phenolphthalein is added?
Ionization and the Phenolphthalein Indicator If hydrogen ions (H+, as found in an acid) were added to the pink solution, the equilibrium would switch, and the solution would be colorless. Adding hydroxide ions (OH-, as found in bases) will change the phenolphthalein into its ion and turn the solution pink.
What causes phenolphthalein to change color?
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.
What colour does phenolphthalein turns when added to a base?
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.
What is the solution that turns phenolphthalein into pink?
The answer is NaOH or Sodium Hydroxide as it is a base.
What colour does phenolphthalein turn in alkali?
Pink
Other indicators
| Indicator | Acidic | Alkaline |
|---|---|---|
| Methyl orange | Red | Yellow |
| Phenolphthalein | Colourless | Pink |
Which solution will turn phenolphthalein pink?
Does phenolphthalein turn pink in acid or base?
How does phenolphthalein change color?
What color change does phenolphthalein undergo during this titration?
13 What color change does phenolphthalein undergo during this titration? Phenolphthalein would change from colorless to pink as base is added.
