CHM110H5 Lecture Notes - Lecture 1: Torr, Burette, Molecular Mass
Document Summary
The experiment comprised of two parts: - a) determination of the atomic mass of a metallic element and b) graham"s law of diffusion: determination of the atomic mass of a metallic element. There are several ways to determine the atomic mass of a metal. The method used in this experiment was based on the following reaction of the metal with the aqueous acid: The atomic mass can be determined from this equation by determining the number of moles of h2 (g) produced by a known weight of the metal. Then the measured results will be analysed on the basis of the stoichiometric equation to determine the molecular mass of the metal. Various equations and formulas were applied to the results of the above experiment to determine the atomic mass of the unknown metal. The value of h (water column above the beaker level) was plugged into the equation: solnhsoln = hghhg to obtain the hydrostaic pressure in torr.
