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Essay heading: Acetylsalicylic acid lab
 
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Issue: Science
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Date added: August 21, 2009
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No of pages / words: 6 / 1450
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50 mL of water was added and the flask was returned to the ice bath for another five minutes. This allowed for more crystallization to occur. 7. The solution was placed in vacuum filtration using a buchner funnel for five minutes. Distilled water was added to the flask to flush solution off the sides of the flask to be poured into funnel for filtration...
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Distilled water was added to the flask to flush solution off the sides of the flask to be poured into funnel for filtration. 8. The remaining product was allowed to air dry and was weighed. The product weight was 2.88 g. 9. The percentage yield of the product was 11.02 percent. Part B This experiment was performed to determine if their was any salicylic acid left in the product...
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Title Pages / Words Save
Acetylsalicylic acid lab
50 mL of water was added and the flask was returned to the ice bath for another five minutes. This allowed for more crystallization to occur. 7. The solution was placed in vacuum filtration using a buchner funnel for five minutes...
6 / 1450
Aldol Lab
Acetone and other keytones oxidize in this solution only after 2-3 mins. Place 2 drops of the unknown aldehyde and 0.5mL of ethanol in a 10 X 75 nm test tube Add water dropwise, shaking after each drop until the cloudiness produced disappears (if too much water used add 1 or 2 drops of ethanol to give clear colution) add 2 drops of phenylhydrazine and shake the test tube to mix the contents a precipitate forms within a few mins chill the test tube in an ice-water bath and collect the phenylhydrazone by vacuum wash three times with ...
2 / 458
Chem Lab
Repeat as needed. 13. Filter the copper sulfate too. 14. Package the dry salicylic acid and the copper sulfate and put it in a vial with a label. Pre weigh the vial first with out the caps on...
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Flowchart
Measure the room temperature. iv. Remove the foil cap and discard the liquid in a waste bottle. Add a second 3 mL portion of the unknown to a flask. Re-cap and repeat the procedure for 3 error-free runs (exclude the first 3 paragraphs)...
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Grignard Synthesis of Triphenylmethanol from Benzophenone
Then, this additional bromobenzene was slowly added to the flask dropwise in an attempt to start the reaction. However, because the reaction did not begin, the entire procedure up until this point was repeated, this time with an intact stopcock and just the 2...
7 / 1863
Reaction Kinetics
The exact time was recorded once again when the solution became colorless. About two mL of NaOH were added to the solution and the time recorded when this became colorless...
3 / 679
Recrystalization
At last crystals were dried in an open container for one week. After one week the mass was measured.
1 / 269