Oxidization of the surface of copper that produces a blue-green layer is called patina. The cleaning of glassware was done in the end of the experiment to avoid cross contamination . The disposing of chemicals was done throughout most of experiment with inputing concentrated HNO3, 6 M NaOH , and 6 M H2SO4 ; extreme caution was used during the insertion of chemicals into the solution , since these chemicals are extremely corrosive and can evaporate skin ; the disposing of chemicals were also done at the end of the experiment into the waste container to avoid harsh chemicals into the water supply and plumbing. In addition, to using safety when pouring chemicals , safety was also used when gases were being vented in the fume hood. In part a , NHO3 is very toxic to inhale so the use of the fume hood is needed. In part e,
Oxidization of the surface of copper that produces a blue-green layer is called patina. The cleaning of glassware was done in the end of the experiment to avoid cross contamination . The disposing of chemicals was done throughout most of experiment with inputing concentrated HNO3, 6 M NaOH , and 6 M H2SO4 ; extreme caution was used during the insertion of chemicals into the solution , since these chemicals are extremely corrosive and can evaporate skin ; the disposing of chemicals were also done at the end of the experiment into the waste container to avoid harsh chemicals into the water supply and plumbing. In addition, to using safety when pouring chemicals , safety was also used when gases were being vented in the fume hood. In part a , NHO3 is very toxic to inhale so the use of the fume hood is needed. In part e,