Qualitative Cation Test

Qualitative Cation Tests

Peter Jeschofnig, Ph.D. Version 42-0194-00-01

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

|Data Table: Qualitative Cation Tests |

| | | |Test Tube 2 (NaOH) | |

|Name |Test Tube 1 (HCl) |NH3 | |Excess |

|Aluminum 3+ |No Precipitate |NA |Milky White Precipitate |Precipitate Dissolves |

|Ammonium + |No Precipitate |NA |No Precipitate |NA |

|Calcium 2+ |No Precipitate |NA |Milky White Precipitate |Precipitate Doesn’t |

| | | | |Dissolve |

|Copper 2+ |No Precipitate |NA |NA |NA |

| | | | |NA |

|Iron 3+ |Precipitate turns yellowish|Turns red litmus paper blue|NA |NA |

|...