CHM110H5 Lecture Notes - Lecture 5: Lab Report, Due Date, John Torrey
Document Summary
Part a of the experiment focused on determining the atomic mass of an unknown piece of metal by calculating the gas released from dissolving in an hcl solution. M(s) + n h3o+ m+n (aq) + n/2h2(g) + n h2o. Part b of the experiment covered the topic of diffusion and graham"s law. The purpose was to find out the distance diffused by the gases of nh3 and hcl that was dropped on either ends of a tube by reading the precipitated ammonium chloride. Part a: a gas burette was filled with the already prepared hcl solution (350ml of distilled water and 150 ml of 1 m hcl) that was in an 800/1000 ml beaker. The filled gas burette was covered with a finger and inverted inside the beaker with the remaining solution, clamped vertically and made sure there were no trapped air bubbles. A strip of unknown metal was given, polished with sand paper, and weighed.
