In this second-semester organic chemistry lab experiment, students work collaboratively using a combination of chemical synthesis and NMR spectroscopy to investigate the diastereoselectivity associated with the Meerwein-Ponndorf-Verley (MPV) reduction of two ketone substrates having carbonyl groups flanked by an [alpha]-chiral carbon with…

The variation in the transference number of H[superscript +] (aq) is investigated for different HCl solution concentrations. The method for scribing graduations on electromigration tubes is modified to decrease the error in experimental measurements, and metallic copper is used as the anode to reduce the toxicity and environmental impact of the…

As teaching laboratories stand empty in light of COVID-19, we extended the practical experience from the laboratory to the safety of the students' homes. We developed a simple, robust, and versatile at-home experiment that teaches solution preparation, calibration curves, real-life sample preparation, and data analysis to second-year analytical…

The identification of coloring substances is a relevant task in the field of conservation and restoration, but it can be challenging as in real samples the target analytes are inserted in a very complex matrix made of binders and additives. Understanding this concept is fundamental for upper-division undergraduate students interested in…

The laboratory experiment regarding esterification of ethylene glycol with acetic acid to ethylene glycol diacetate using resin catalysts in a continuous flow was designed to carry out the reaction in a flow through an inquiry-guided approach. Incorporating the burgeoning field of continuous flow chemistry into the educational infrastructure, the…

Given the importance of self-healing polymers for chemistry education, herein, we introduce our latest research results in self-healing materials based on thioctic acid into undergraduate chemistry laboratory. In this experiment, a natural small molecule, thioctic acid (TA), and a few other commercially-available reagents have been used to make a…

Normal phase thin layer chromatography is a widely taught technique in undergraduate organic chemistry laboratory courses. To understand how the technique works, students must have a strong conceptual understanding of polarity and intermolecular forces. Unfortunately, many students have misconceptions regarding how polarity and intermolecular…

Tofu, a traditional Chinese food, is now popular worldwide. However, few people notice the chemistry that is involved in its production. To shed light on this, we have designed a simple demonstration for lower-level undergraduates in organic chemistry or biochemistry courses to help them understand the chemistry principles that underlie the…

Educational content is consistently adapted to enhance the learning experience of students at all experience and skill levels. Student motivation and accessibility are key factors in teaching science to a broad audience. The presented experiments engage the students by relating the content to that which is immediately relevant to them: the threat…

The analysis of functional groups in organic compounds and inorganic ions in salts is a laboratory experiment that forms an inevitable part of the undergraduate chemistry curriculum in the science field all over the world. With this experiment, the student learns the testing techniques for the chemicals and gets a true sense of the importance of…

The use of mass spectrometry (MS) is becoming widespread and rather routine in all levels of industry, government, and academia. Coupled with chromatographic methods, this powerful instrumental technique can be used to elucidate the composition of a complex sample and definitively identify constituents while offering the benefits of high-precision…

We present a simple undergraduate level experiment dealing with the preparation and characterization of a colloidal Langmuir-Blodgett (LB) film. The experiment is designed to invoke an interdisciplinary understanding of colloid chemistry and surface science. It will allow the students to develop the concepts of wettability, hydrophobicity, and…

Essential oils serve as a valuable, inexpensive natural supply of useful organic compounds that possess various biological activities, including antimicrobial properties, and most oils emit pleasant and familiar odors. They are an excellent source of analytes for introductory organic laboratory experiments. We report an experiment in which…

In this work, we have developed a versatile three-in-one single beam visible colorimeter for undergraduate laboratory courses. The battery and mains electricity supply (utility power), wired and wireless data logging, and 3D-printed components are three important highlights of the developed visible colorimeter. The system is based on a low-cost…

The "Golden Penny" demonstration is a popular experiment that involves treating copper coins with chemical reagents to form brass, an alloy of copper and zinc that has a golden color. Reported here is a very simple modification for forming golden color on copper coins that does not require the use of chemical reagents. Instead, golden…