An experiment using a gasometric assembly to determine the thickness and a number of atomic layers of zinc in a galvanized iron coating is described. The number of atomic layers of zinc is solved using three skills: a guided-inquiry approach, data processing, and guided problem solving. The gasometric assembly used is made up of a graduated pipet. Rubber tubing, a test tube, and detergent. An ascending bubble layer inside the pipet is observable during the zinc reaction with acid. The result suggests that weight percent, thicknesses, and the number of atomic layers of zinc coating on galvanized iron substrates can be reproducibly obtained using the novel gravimetry and gasometry assembly.
|Number of pages||3|
|Journal||Journal of Chemical Education|
|Publication status||Published - 2007 Nov 1|
All Science Journal Classification (ASJC) codes