Università Roma Tre

1) determination of the molar concentration of a KMnO4 solution through quantitative redox reaction with H2C2O4; 2) determination of the molar concentration of a NaOH solution through quantitative reaction with H2C2O4; 3) UV-visible spectroscopic determination of Fe(II) aqueous solution molar concentration; 4) buffers at acid pH: preparation and pH measurements through instrumental methods.

SLIDES SUMMARISING THE DESCRIPTION OF LABORATORY EXPERIMENTS CAN BE FOUND ON THE COURSE WEBSITE.

VOLUMETRIC CHEMICAL ANALISYS: ACID-BASE TITRATION; INDICATORS; REDOX TITRATION. POTENTIOMETRIC METHODS: THE PH-METER. ANALISYS BY SPECTROPHOTOMETRIC METHODS: UV-VISIBILE SPECTROSCOPY, THE SPECTROPHOTOMETER, ABSORPTION SPECTRA, LAMBERT-BEER LAW. PRACTICAL EXPERIENCES IN THE LABORATORY CONCERNING THE TOPICS OF THE TEACHING PROGRAM.
TOPIC CONSIDERED FOR THE LABORATORY EXPERIENCES (3 CFU):THE CHEMICAL LABORATORY: TOOLS AND MATERIALS. BEHAVIOUR REGULATIONS AND SECURITY. MEASUREMENTS, MEASUREMENT ERRORS. QUANTITATIVE VOLUMETRIC METHODS :ACID-BASE AND REDOX TITRATIONS. PREPARATION OF SOLUTIONS OF PRECISE CONCENTRATION; STANDARD MATERIALS. INDICATORS AND TITRATION CURVES. ANALISYS BY POTENTIOMETRIC AND SPECTROPHOTOMETRIC METHODS. THE FOLLOWING TOPICS WILL BE CARRIED ON: ACID-BASE TITRATION. REDOX TITRATIONS. POTENTIOMETRIC TITRATIONS. SPECTROPHOTOMETRIC DETERMINATION OF FE2+.

LAB. EXPERIENCES BOOKLET ARE AVAILABLE ON REQUEST TO THE TEACHER.