Identification of Metallic Ions Essay

741 WordsOct 27, 20133 Pages
Identification of Metallic Ions Peter Jeschofnig, Ph.D. Version 42-0160-00-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor. obseRvations The color of the flame is expected to be as follows: Metallic ion Flame color Sodium Na+ Yellow/Bright Orange Strontium Sr2+ Red Potassium K+ Light Purple Barium Ba2+ Green Copper Cu2+ Green Lithium…show more content…
This is also how we can use this test as an identifier for certain compounds. Conclusion: In the experiment, I set up the 24-plate well, and added each solution one by one while keeping track of which liquid was in which well. I lit my burner with matches and started assembling my make-shift cotton toothpicks. My Q-tips were plastic, so I (with gloved hands) ripped the cotton off the swab and wrapped it around a toothpick. I then proceeded to dip the cotton in and wait a second or two before waving it through the flame. I noticed the color change with the sodium immediately, but with the others it took a bit longer. I repeated the process with each liquid three times just to be sure. Especially with the Potassium, as it was very difficult for me to discern the color change. I tried to eliminate any major errors by taking my time and redoing the experiment a few times, but I did spill a bit of the liquid as a cut the pipets open. Also, my swabs may have been previously contaminated by the salt on our skin due to frequent use. MSDS INFO Barium Nitrate: Toxic/oxidizer: harmful if swallowed; avoid contact with eyes and skin; WARNING! VERY HAZARDOUS IF SWALLOWED. MAY CAUSE MODERATE TO SEVERE IRRITATION TO EYES AND/OR BURNS RESULTING IN CORNEAL INJURY. HARMFUL IF INHALED. CAN CAUSE IRRITATION AND OR BURNS TO SKIN, EYES AND RESPIRATORY TRACT. Calcium Nitrate:Harmful/Oxidizer: harmful of swallowed; avoid contact with eyes and skin Cupric

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