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| SESSION 2 | POTENTIOMETRIC AND VOLTAMMETRIC STUDY OF THE FERRICYANIDE/FERROCYANIDE REDOX COUPLE IN AQUEOUS SOLUTION OF POTASSIUM CHLORIDE |
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This experiment focuses on the electrochemical behaviour of anionic ferricyanide in an aqueous potassium chloride solution using cyclic voltammetry and potentiometry. |
| SESSION 3 | FLUORESCENCE SPECTROSCOPY. A STUDY ON THE EFFECT OF MOLECULAR STRUCTURE ON THE FLUORESCENT CAPACITY OF DYES AND THE ENERGY TRANSFER OF EXCITED RIBOFLAVIN MOLECULES |
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In the first part of this experiment, we will obtain the fluorescence, absorption and excitation spectra of a series of dyes from the same family; the intensity of fluorescence will be related to the molecular structure. In the second part, the energy transfer from an excited molecule (riboflavin) to a non-excited molecule (IK) will be analysed. |
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| SESSION 4 | DETERMINATION OF THE SURFACE TENSION OF HYDROETHANOLIC MIXTURES BY THE DU NOUY METHOD |
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This experiment focuses on the measurement of the surface tension of binary mixtures of an alcohol and water. An equation relating the surface tension with the concentration of alcohol in aqueous solution will be established and used for the determination of the excess surface concentration of alcohol. |
| SESSION 5 | KINETIC STUDY OF THE PHOTOCHEMICAL OXIDATION OF TRIPHENYLPHOSPHINE |
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A kinetic study of the photochemical oxidation of triphenylphosphine in organic medium will be carried out by measuring the remaining fraction of triphenylphosphine using reverse phase HPLC chromatography. |
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| SESSION 6 | KINETIC THEORY OF GASES. PART I. GAS VISCOSITY: ESTIMATION OF MOLECULAR DIAMETER. PART II. DETERMINATION OF MOLECULAR MASS USING THE IDEAL GAS LAW. |
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The diameter and the molecular mass of two gases will be estimated from the viscosity and the mass by applying the kinetic theory of gases. |
| SESSION 7 | QUANTUM-CHEMICAL STUDY OF ELECTRONIC TRANSFER IN POLYENIC AND POLYCYCLIC CONJUGATED MOLECULAR WIRES |
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The study shows the studentthe main methods of semi-empirical calculations. The PM3 method will be used to obtain the electronic structure and properties of the groundstate, and the INDO/S method is used to obtain properties related to the excited states. The determination of these properties will allow the student to analyze the change in intramolecular electronic transfer (IET) that occurs in molecular wires with conjugated π spacers of different nature and length. The student will be able to establish the factors that facilitate the transport of electrons and, therefore, their ability to behave like good molecular wires. |