LAB REPORT FOR EXPERIMENT #2: PURIFICATION OF ACETANILIDE BY RECRYSTALLIZATION Your name TA’s name Your Partner’s name Lab Section OBSERVATIONS: A. SELECTING A RECRYSTALLIZATION SOLVENT | |Solubility Test (cold) |Solubility Test (hot) | |Water |insoluble |soluble | |pet ether |insoluble
Premium Solubility Solvent Solution
RECRYSTALLIZATION AND MELTING POINT DETERMINATION OF BENZOIC ACID ANSWERS TO QUESTIONS 1. How does the use of fluted filter paper hasten filtration? Why is it advisable to place a small piece of wire between the funnel and the mouth of the flask during hot filtration? Fluted filter paper is effective in preventing crystal formation in the filter paper. It is also often used in filtering hot saturated solution used during crystallization. One major advantage of a fluted filter is that it increases
Premium Filter paper Solvent Filters
Jolyne Piet CHM-221L-02 Lab #2: Experimental Design Isolation of Sucrose: 3.01 g Panacetin were weighed in a 125-mL Erlenmeyer flask‚ and 51mL dichloromethane were added to partially dissolve the Panacetin. The insoluble portion was gravity filtered and air dried to yield 0.45 g of sucrose (15.0 % of original Panacetin). Isolation of Aspirin: The organic filtrate was extracted through a separatory funnel with 32 mL 5% sodium bicarbonate to produce an aqueous layer and a dichloromethane layer
Premium Sodium bicarbonate Hydrochloric acid PH
The IR spectrum in KBr was a great way to compare the library spectrum to the crude and recrystallized Phenacetin. The KBr is a compound that does not show up in the spectrum‚ only the crude and recrystallized Phenacetin show. In this experiment‚ the crude had an 87.17% match to the library. In the recrystallized Phenacetin‚ the IR spectrum was taken twice due to the amount of KBr used in the pellet. The first recrystallized spectrum had a 68% match to the library spectrum. That not being
Premium Infrared Wavelength Functional group
Recrystallization Estopace‚ Edgie1‚ Polintan‚ Clarisse K. Professor Edgie Estopace‚ School of Chemical Engineering‚ Chemistry and Biotechnology‚ Mapua Institute of Technology; Clarisse Polintan‚ CHM145L/A21‚ School of Chemical Engineering‚ Chemistry and Biotechnology‚ Mapua Institute of Technology ABSTRACT This experiment is all about identifying the appropriate solvent for recrystallization and technique and to use the recrystallization technique in purifying a solid sample. Most organic
Premium Solvent Temperature Solubility
Recrystallization Description of Technique/Process Recrystallization is the process of purifying solids based on their different solubilities. The steps involved in recrystallization are: a. Find a suitable solvent for the recrystallization; b. Dissolve the impure solid in a minimum volume of hot solvent; c. Remove any insoluble impurities by filtration; d. Slowly cool the hot solution to crystallize the desired compound from the solution; e. Filter the solution to isolate
Premium Solubility Metal Solution
Adeoti Taylor Chem2583 Organic Chemistry Laboratory Class ID:8622098 Organic Lab 2 2583-04 Instructor: Andy Szalkiewicz 9/30/2014 Recrystallization Objective/Abstract: The purpose of this lab is to purify solids contaminated by relatively small amount of impurities by a technique called Recrystallization. Compounds that have different solubility at different temperature usually can be recrystallized. Formulas and Structures: Benzoic Acid Methanol Percent Recovery: Indicates how much of the
Premium Chemistry Solid Hydrogen
RECRYSTALLIZATION OF ACETANILIDE De Ocampo‚ Yves Aaron Julian Q.‚ Dela Vega‚ Roderick B. Jr.‚ Elguira‚ Cedric Tristan D. Enriquez‚ Joanne B.‚ Gabat‚ John Elliot N. Group 5 2D-Medical Technology Faculty of Pharmacy‚ University of Santo Tomas ABSTRACT The experiment was executed in order to purify compounds through recrystallization. Recrystallization is the primary used operation for purifying solid organic compounds that differ in solubility at different temperature. It is a process of dissolving
Premium Solubility Solvent Acetic acid
The Purity and Purification of Solids- Part 2- Recrystallization Courtney Percival CH 337 Laboratory‚ Section 037 Department of Chemistry Portland State University‚ Portland OR ABSTRACT INTRODUCTION Recrystallization is a commonly used tool in laboratories when dealing with impure solids. "An effective recrystallization is one in which 1) a high degree of purity is achieved as well as 2) a maximum recovery of sample".1 Solubility‚ the tendency of a substance to dissolve in a liquid‚ is an
Premium Chemistry Solid Crystal
Since recrystallization is more of a method to purify than a separation method we had to apply the bases. Normally‚ recrystallization is done by increasing the solubility of a solvent by heating it up‚ but since we did constant temperature recrystallization we use acidification as our method of recrystallization. The acidification using 6M HCl changed the solubility of our compounds by protonating them. The
Premium Aspirin Acetic acid Salicylic acid