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Direct linkAnge´lica M. Gonza´lez-Sa´nchez; Edgardo L. Ortiz-Nieves; Zuleikra Medina – Journal of Chemical Education, 2014
Many students share the common belief that the limiting reactant in a chemical reaction is the reactant in the smallest quantity of material. To help students overcome this difficulty a hands-on activity for the limiting reactant concept was developed. The activity incorporates the three levels of representation (macroscopic, submicroscopic, and…
Descriptors: Science Instruction, Chemistry, Scientific Principles, Teaching Methods
Dabke, Rajeev B.; Gebeyehu, Zewdu – Journal of Chemical Education, 2012
A simple 3-h physical chemistry undergraduate experiment for the quantitative analysis of acetic acid in household vinegar is presented. The laboratory experiment combines titration concept with electrolysis and an application of the gas laws. A vinegar sample was placed in the cathode compartment of the electrolysis cell. Electrolysis of water…
Descriptors: Chemistry, Laboratory Experiments, College Science, Science Instruction
