Chem1_Lab Report 5

Chem1_Lab Report 5 - Lab Report 5: Solubility and...

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Lab Report 5: Solubility and Precipitation Chemistry 1 Teddy Portney June 17, 2007 Summer 1, 2007 1. Purpose: The purpose of this lab was primarily to determine the laws of solubility for ourselves, based upon our experimentation, and which cations formed precipitates with which anions. Solubility is a very important part of chemistry in solution. 2. Experimental Methods: The procedure was followed as described in the handout from Chemistry 1, Summer 2007 at Tufts University for experiment 5; Solubility and Precipitation. 3. Data and Observations: The table shown below includes all the outcomes of every reaction we observed. As we predicted, not every reaction yielded a precipitate, although some did undergo color changes or other physical changes, while others remained entirely unchanged. Cl- Br- I- CO3 2- SO4 2- PO4 3- CrO4 2- HO- S 2- K+ - - - - - - - - - NH4+ - - - - - - - - - Mg 2+ - - - silver-white - white - silver - Ca 2+ - - - silver-white - faint white - cloudy white whitish Ba 2+ - - - silver-white - pale gray light yellow - milky white Al 2+ - - - silver-white - faint white orange - silver Pb 2+ - milky white vibrant yellow silver-white milky white milky white speckled yellow milky white silver Cr 3+ - - - green-blue - green-gray brown red green yellow-brown Mn 2+ - - - silver - light yellow color change: dark orange gold-brown yellow. Fe 2+ -
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This note was uploaded on 03/27/2008 for the course CHEM 01 taught by Professor Kryatov during the Summer '07 term at Tufts.

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Chem1_Lab Report 5 - Lab Report 5: Solubility and...

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