SC CHEM 333 - Synthesis of Phthalic acid Pre-Lab (8 pages)

Previewing pages 1, 2, 3 of 8 page document View the full content.
View Full Document

Synthesis of Phthalic acid Pre-Lab



Previewing pages 1, 2, 3 of actual document.

View the full content.
View Full Document

Unformatted text preview:

Organic Chemistry 333L section 03M Laboratory Pre Lab Synthesis of Phthalic acid Synthesized By Cameron Kahn Instructor TA James Collie 13 January 2019 1 Page Object In this experiment a person will be able to purify phthalic acid by means of recrystallization and recover a pure stable compound with a minimum loss of product They will also be able to find the melting point mass of the product and calculate the percent recovered Theory The most important method for purification of a solid organic compound is crystallization Most commercial samples are only 95 96 pure and need to be purified using recrystallization It is a rapid and convenient method CITATION Geo12 l 1033 The recrystallization process purifies alum aspirin and copper sulfate One of the most important parts of the recrystallization process is choosing the right solvent for the job The solvent should allow impure organic solid to dissolve completely when heated When the solution cooled to room temperature or below the solid should recrystallize from solution in a pure form The solid then should be isolated in a pure form while the impurities in the solid fail to dissolve at the elevated temperature or remain dissolved when the solutions is cooled Separating crystals from the solvent done by means of gravity filtration Gravity Filtration is a technique used to separate a solid from a liquid The solid separated from the liquid phase by passing the mixture over a filtering media The mixture forced through the filter by either gravity or reduced pressure on one side of the filter by creating a vacuum It is possible to separate a solid from a liquid by either technique however there are advantages to each technique CITATION Boa13 l 1033 Procedure Start by measure 100mg of impure phthalic acid and placing it in a small test tube Now add 11 5 mL of room temperature water and a boiling stone Bring the solution to a boil by using the heating mantle with a Variac setting of 50 Be sure to place the test tube in a



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view Synthesis of Phthalic acid Pre-Lab and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Synthesis of Phthalic acid Pre-Lab and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?