Phenolphthalein is colorless in an acidic solution. In an acidic solution, the benzoid form of phenolphthalein exists. In the benzoid form of...Become a member and unlock all Study Answers Start today. Try it no
Phenolphthalein alkalinity can be described as the alkalinity in a water sample measured by the amount of standard acid required to lower the pH to a level of 8.3. This pH value is indicated by the color change of phenolphthalein from pink to colorless. Usually, carbonate, hydrogen carb...
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Phenolphthalein is a mild acid used in both medicine as an ingredient in laxatives and in science as a substance for testing the...
The abrupt color change of the indicator marks the end point of the titration. Some of the indicators commonly used in the laboratory are phenolphthalein, methyl orange, cresol red, etc. The pH at the equivalence point of the titration must be considered in choosing the appropriate indicator....
In what pH range do methyl orange and phenolphthalein change color? The colours of the acid and base forms of the indicator Bromo cresol green are yellow and blue, respectively, and its pK_a is 4.6. (a) What colour would be expected for...
designed to identify thepHof a solution over a wide range of values. There are several different formulas for universal indicators, but most are based on a patented formula developed by Yamada in 1933. A common mixture includes thymol blue, methyl red, bromothymol blue, and phenolphthalein....
The reaction of an acid with a base to give a salt and water is known as a neutralization reaction. In general neutralization reaction can be written as, Base+AcidtoSalt+water Ex: 1) N/AOH+NCltoN/ACl+H2O 2)Ca(OH)2+H2SO4toCaSO4+2H2O
The second common method is color-indicating titration, in which a pH indicator should be used, such as phenolphthalein. A burette is used to add the titrant to the sample where the permeant color change of the solution gives the endpoint of the solution, which indicates the total acid conten...
The scientific study of matter's characteristics and behaviour is known as chemistry. Chemistry vocabulary and Chemistry glossary are different from the normal vocabulary. It is a branch of natural science that examines the building blocks of matter, including the atoms, molecules, and ions that mak...