Konduktometrične titracije

Mezgec, Tinkara (author), Gros, Nataša (mentor)

V sklopu diplomskega dela sem opravljala konduktometrične titracije. Zaradi titracijske reakcije se spremeni ionska sestava raztopine. Pri tem pa se spreminja prevodnost, ki sem jo merila s pomočjo konduktometra. Konduktometrična titracija je primerna za razredčene in obarvane raztopine. Pri mojem eksperimentalnem delu so bile vse brezbarvne. Z 0,1 mol/L raztopino HCl sem titrirala pet različnih bazičnih raztopin. Ker me je zanimal tudi vpliv redčenja, sem za vsako raztopino pripravila dve različni koncentraciji. S pomočjo dobljenih meritev sem oblikovala titracijske krivulje. Titracijske krivulje sem nato primerjala med sabo, ter identificirala možne težave.

• Language: Slovenian
• Keywords: konduktometrična titracija, vpliv redčenja, titracijska krivulja, prevodnost
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Year: 2019
• PID: 20.500.12556/RUL-110673
• COBISS.SI-ID: 1538434499
• Publication date in RUL: 18.09.2019

Secondary language

• Language: English
• Title: Conductometric titrations

Abstract

In the context of my thesis I carried out conductometric titrations. Titration reaction causes the change in the ionic species present in the solution. As a result the conductivity changes and I measured it with conductometer. Conductometric titration is suitable for diluted and coloured solutions. In my experimental work all the solutions were colorless. I titrated five different basic solutions with 0.1 mol/L solution HCl. I was also interested in the effect of dilution, therefore I prepared two different concentrations for each solution. Using the obtained measurements, I constructed the titration curves. I then compared the titration curves to each other and identified the possible problems.

• Keywords: conductometric titration, effect of dilution, titration curve, conductivity