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.
Phenolphthalein is colorless in sulfuric acid.
Yes, phenolphthalein is a compound with the molecular formula C20H14O4.
Alkalis turn phenolphthalein pink or magenta.
No, ammonia does not turn phenolphthalein pink. Phenolphthalein is a pH indicator that turns pink in basic solutions, but ammonia is a weak base and typically does not have a strong enough pH to turn phenolphthalein pink.
NaOH turns pink when phenolphthalein is added.
Phenolphthalein turns pink in a basic solution.
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.
Nothing will happen... but when you put a drop of the vial in the phenolphthalein, the phenolphthalein will turn into pink... It was just an observation that I saw in our experiment this afternoon
Phenolphthalein turns pink in a base and turns colourless in a base
Phenolphthalein turns pink in a basic solution.
The phenolphthalein indicator is pink in basic solutions.
Phenolphthalein itself is a chemical. It changing color is a chemical change.