![]() ![]() ![]() You will then analyze an unknown sample in order to determine which Group III cations are contained within the sample. Similar to last week’s procedure, you will analyze a known mixture of all four Group III cations as a positive control experiment. Rinse the test tube and return it to the instructor’s bench at the end of lab. Rinse all glassware directly into the waste container using a wash bottle.Īny unused portion of the unknown sample should be discarded in the hazardous-waste container. If any acid comes into contact with your skin or eyes, immediately rinse the affected areas with copious amounts of water for 15 minutes, and inform your instructor.Īll the waste chemicals generated by this lab are toxic and must be disposed of in the hazardous-waste container in the fume hood. Exercise appropriate caution when using all concentrated acids and bases in this lab as they can cause serious chemical burns to your skin.The PPE for this lab includes safety goggles, lab coat and nitrile gloves.The entire analysis scheme is represented in abbreviated form using the follwing flow chart:įigure 1: GROUP III CATIONS ANALYSIS SCHEME ![]()
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