Visual chemo-chronometric assay for quantifying ethanol in alcoholic drinks by the colorimetric Belousov-Zhabotinsky oscillator

Using the Colorimetric Oscillating Reaction for Simple Quantification of Ethanol in Commercial Liquors in an Undergraduate Chemistry Laboratory

“…It is well-known that ethanol can affect the BZ dynamical parameters, such as propagating velocity of chemical waves in a Petri dish or oscillation period. , The main reason is that BrO 3 – reacts with ethanol to produce acetic acid, decreasing BrO 3 – content in process A. , The lower the concentration of bromate in the system, the faster the switching process from A to B. It is also noted that the dissociation effect of acetic acid produced from the reaction is negligible as it is a weak acid ( K a = 1.8 × 10 –5 ).…”

“…At this point, all the students discussed the effect It is well-known that ethanol can affect the BZ dynamical parameters, such as propagating velocity of chemical waves in a Petri dish 8 or oscillation period. 9,10 The main reason is that BrO 3…”

“…As a typical example of self-organization systems, the BZ reaction has attracted considerable attention over the past few decades due to its complex dynamics and applications in both theoretical and experimental chemistry. The reaction has been extensively developed as an analytical tool for the determination of various analytes, such as organic comounds, − antioxidants, − and ions . The detecting principle is mainly based on the analyte pulse perturbation (APP) technique .…”