Lab Memo 4a - Carey Beth Condrey 10/16/2008 Lab 4a...

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Carey Beth Condrey 10/16/2008 Lab 4a – Solubility of an Organic Acid, Organic Base, and a Neutral Compound Post Lab Objectives The purpose of this experiment was to observe the solubility of solids benzoic acid, sodium benzoate, azobenzene, and m -nitroaniline in water, a polar solvent, and ether, a non-polar solvent. Pending the solid’s solubility in the solvent, hydrochloric acid (HCl) or sodium hydroxide (NaOH) was added to the solution and observations as to whether a reaction had occurred were made. Observations This experiment consisted of mixing various organic solids with water and ether and then, if the solid had dissolved, a strong aqueous base or acid. Sodium benzoate was the only compound that dissolved in water; the sodium ion makes this compound an ionic salt, and therefore dissolves in water. When NaOH was added to the aqueous solution of sodium benzoate, no reaction occurred. However, when HCl was added, sodium chloride (salt) precipitated out of the solution. All of the compounds, with the exception of sodium benzoate, dissolved in the diethyl ether. When mixed with the HCl or NaOH, two layers were created with the aqueous solution forming the bottom, heavier
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This note was uploaded on 03/02/2009 for the course CHEM 2545 taught by Professor Csantos during the Fall '08 term at Virginia Tech.

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Lab Memo 4a - Carey Beth Condrey 10/16/2008 Lab 4a...

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