TITLE:
Method of Estimation of Chemical Compounds of a Solution by Analysis of Video Images of Titration from a Semi-Automatic Approach
AUTHORS:
Marcelin Sandje, Sie Ouattara, Diako Doffou Jerome, Alain Clément
KEYWORDS:
Titration, Turning, Equivalence Point, Volume at Equivalence
JOURNAL NAME:
Open Journal of Applied Sciences,
Vol.12 No.6,
June
30,
2022
ABSTRACT: To
titrate or measure a chemical species in a solution is to estimate its quantity
of matter or its molar concentration in a given solution. Several methods of
estimating molar concentrations of chemical species exist, the main ones being
Colorimetric titration, Conductimetric titration, pH metric titration. In
practice, all these methods present approximative results because the operator
repeats the experiment to ensure the reliability of the results. As a
consequence, we have a prolonged time of the experiment which involves a cost
in reagents. Given the repetitions of the same experiment, the final result is
the average of the results of each experiment. The aim of this paper is to
correct this subjectivity by implementing a semi-automatic approach based on
colorimetric titration. At the end of the implementation of our approach, we
compared our results to those of existing techniques. These results show the
reliability of the calculation by the semi-automatic method. This method of
estimating the volume at equivalence is fast because it is not manual and does
not involve the use of geometric measuring instruments to find the volume at
equivalence. This method improves the manual calculation of the volume at
equivalence used in the laboratories in school and student environment.