Development of an Android-Based Color Detector for Chemistry Experiment in the Classroom

Abstract

This study aims to develop an android-based color sensor for chemistry practicum and demonstration in front of the class using colored chemicals. The materials used are cardboard boxes, laptops as light sources, test tubes and smartphones for testing the Lambert-Beer experiment and titration apparatus such as oxalic acid, NaOH, indicator, stative, clamps prepared for the acid base experiment. The relationship of concentration versus absorbance was observed. The results show that this application has a very high accuracy with a r 2 = 0.999. This application is highly recommended to be applied in school chemistry teaching and practicum and is very useful to help students with color vision limitations.