(PLEASE only answer if will answer all parts of my question willrate good (: )
In the experiment we did acid-base extractions to findimpurities. The impurity was either benzoic acid (acid) or4-chloroaniline (base) So, in this experiment we did Acid-Baseextraction with an unknown compound. So, we had an unknown of 0.150grams and mixed it with 20 mL of diethyl ether. We placed this in aseparatory funnel and added 2mL of 1.0 HCl solution to theseparatory funnel and placed the stopper over the top of theseparatory funnel. Gently shook the funnel to mix the two layersand drained the aqueous layer into a test tube #3. We did thisagain (2 mL of 1.0M HCl) and repeated the extraction and placed thecontents into test tube #4. To check for impurity, we added 6.0 MNaOH to both test tubes until basic. Precipitate formed. Bothformed precipitates but Test tube #4 had the most. WHY IS THIS?
Upon getting a melting point, I identified my unknown asFluorenone. (Melting point was around 111-114 degrees Celsius)
The questions I NEED HELP WITH: - Describe what impurity was inyour impure unknown and how you determined this?
-Why is a precipitate observed by describing the structure ofthe impurity and the reactions involved/ possible experimentalerror? I was also confused because it asked me "which test tube hadthe most precipitate and why?" My test tube #4 had the most but I'mnot sure why it had more than test tube #3?
Please I need any help I can get!
Please be as thorough aspossible.