Integrated Laboratory II

The teaching methodology used in this course consists on laboratory classes oriented to practical tasks conducting experiments on laboratory equipment.

This course is intended to: i) develop the ability of the students to work together (teamwork) responsibly and safely, realizing the risks involved in different laboratory practices, ii) plan experiences in order to achieve certain goals; iii) acquire laboratory practice in simple procedures such as preparation of solutions, titrations, equipment operation for mixtures separation on a laboratory scale and also for identification, separation and quantification of organic compounds, iv) analyze and criticize the experimental results; v) practice in writing reports and oral discussion; vi) follow basic concepts taught in theoretical lessons like Chemistry and Thermodynamics.

The students performed 8 experiments during the laboratory classes:
1. Simple and fractional distillation of a binary mixture.
2. Plotting a triangular diagram.
Determination of solubility curve chloroform – acetic acid- water system.
3. Tie lines
Obtaining three tie lines on a triangular diagram for the chloroform – acetic acid – water system
4. Distribution of a solute between two immiscible solvents
5. Determination of the viscosity of a Newtonian fluid
Measuring the viscosity of a solution and studying the variation of viscosity with temperature.
6. Recrystallization , filtration and melting point: Purification of benzoic acid.
7. Chromatography: Separation of pigments from spinach.
8. Extraction: (Part A) Simple and multiple extraction of methyl orange, ( Part B ) Determination of caffeine in tea.

• - CF= (Avaliação1 + Avaliação2 + Avaliação3 + Avaliação4+ Avaliação5 + Avaliação6 + Avaliação7 + Avaliação8 + Avaliação9)/9 - 100.0%

NAO

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1. Smith, J.M., Van Ness, H.C., Abbott, M.M., “Introduction to Chemical Engineering Thermodynamics”, 7th Ed., McGraw Hill Higher Education, 2005.