Resumen de An n-Bottle Lab Exercise With No Hazardous Waste
n-Bottle lab exercises are popular with both students and instructors. They rely on unique patterns of reaction between substances in aqueous solution. Such exercises test observation, measurement, and deductive reasoning skills of students while presenting the puzzle, "What's in the bottle?" Traditional n-bottle exercises include precipitation reactions of environmentally hazardous substances, thereby creating a waste disposal problem. The lab exercise described here uses substances whose waste can be easily treated and disposed in the trash. Different versions of the lab are presented which pose various levels of difficulty for students.
