A+ Solution UOP CHM/150 Identification of Metallic Ions Lab

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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+ Strontium Sr2+ Potassium K+ Lead Pb2+ Barium Ba2+ Copper Cu2+ Lithium Li+ Calcium Ca2+ Unknown

 

 

 

Questions                                                                                                                           

 

A.  All chemical used in this test are binary compounds. What portion of the periodic table is responsible for the color observed?

 

 

 

 

 

B.   In cooking over an open flame, a yellow flame is often observed when some food is spilled into the flame? What is most likely responsible for the yellow flame color?

 

 

 

 

 

C.   What problems might be associated with using flame color for identification purposes?

 

 

 

 

 

D.  Explain how the observed colors are produced

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