W7 lab report

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kzala5602

1 Dec 2021

School

Concordia University

Department

Chemistry

Course

CHEM 221

Professor

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Document Summary

Experiment # w7 (chem 221) qwertyuiopasdfghjklzxcvbnmqwertyui opasdfghjklzxcvbnmqwertyuiopasdfgh jklzxcvbnmqwertyuiopasdfghjklzxcvb nmqwertyuiopasdfghjklzxcvbnmqwer tyuiopasdfghjklzxcvbnmqwertyuiopas dfghjklzxcvbnmqwertyuiopasdfghjklzx cvbnmqwertyuiopasdfghjklzxcvbnmq wertyuiopasdfghjklzxcvbnmqwertyuio pasdfghjklzxcvbnmqwertyuiopasdfghj klzxcvbnmqwertyuiopasdfghjklzxcvbn mqwertyuiopasdfghjklzxcvbnmqwerty uiopasdfghjklzxcvbnmqwertyuiopasdf ghjklzxcvbnmqwertyuiopasdfghjklzxc vbnmqwertyuiopasdfghjklzxcvbnmrty uiopasdfghjklzxcvbnmqwertyuiopasdf ghjklzxcvbnmqwertyuiopasdfghjklzxc vbnmqwertyuiopasdfghjklzxcvbnmqw. The objective of this experiment was to separate the components of penacetin by extraction and evaporation and then purify the unknown by recrystallization and establish its identity by determining its melting point. By extraction we mean the transference of compound from a solid or liquid into a different solvent or phase. The most commonly used extraction method in chemistry labs id liquid-liquid extraction which is carried out in a seperatory funnel. A solution containing dissolved components is placed in the funnel and an immiscible solvent is added, resulting in two layers that are shaken together. Most commonly one layer will be aqueous and the other an organic solvent. "extracted" when they move from one layer to the other.

Related Questions

Can someone please help me figure this out? We have to figure out an experiment to get at least 90% yield of compound B.

These are the topics covered that we can use to plan this experiment:

1) Basic Operations: Using a weighing balance; Separation, Density.
2)Separating the Components of Panacetin - Acid-Base Reactions, Stoichiometry Techniques: Separation, extractions
3) Identifying the Constituents of Panacetin: Key techniques: Recrystallization and Melting point
4)Synthesis of Salicylic acid . Key techniques: Reflux, Recrystallization, Melting point
5) Separation of Unknown by Chromatography-Concepts: Polarity, capillary action, Technique: Column and Thin layer chromatography
6)Dehydration of cyclohexanol to an cycloalkene. Key Concepts: Preparation, and Reactions Hydration, Halogenation & Hydro halogenation of Alkenes;
7)Polarimetric Analysis of Unknown Sugars. Key concepts: Stereochemistry Techniques: Optical rotation
8)Properties of organic compounds -Concepts: Solubility, Hydrogen bonding; Technique: Distillation
9)Preparation of 2-chloro-2-methylbutaneâAn Sn1 reaction - Key concepts: Nucleophilic Substitution reactions

Discuss how successful you were in this experiment. e.g., did you obtain the results you expected? Were you efficient? yes

Is there anything you would you do differently? How might you improve your technique?

my experiment is about the extraction and i got obtain the results I expected

a start up company is trying to produce its own brand of antibacterial ointment. it decides to analyze a generic brand already on the market so that it can make suitable modification to the chemical composition. its known that the generic ointment contain benzoic acid( active ingredient), benzhydrol (the fixative) and anise, which add fragrance. you are a part of development team that wishes to separate these three substances in order to determine their relative proportions in the ointment, as well as to discover any inactive or unlisted constituents. some member of your team were able to isolate the inactive ingredient; However, NMR reveals that you still have a mixture of benzoic acid, benzhydrol, anisole left unseparated.

as a member of team, you have been asked to do the following:

1. design an experiment to separate the following compounds from a mixture using any combination of purification techniques (TLC, column chromatography, Extraction and recrystallization) 2. carry out characterization studies such as melting point, IR, NMR to confirm that your purification was successful.

3. determine the percent recovery of the individual components of the mixture.

mixture originally contained; 0.5g benzoic acid, 0.25g benzhydrol, 0.25ml anisole and 10ml diethyl ether.

W7 lab report

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