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Hypochlorite Oxidation of Methyl Ketones (Haloform Reaction)
Reacting Acetophenone with bleach in excess to form benzoic acid and chloroform.
During the reaction Sodium sulfite was used to detroy any unreacted bleach. I extracted the mixture of acetophene and bleach with 1.0 ml ether, after heating the solution and adding sodium sulfite. The reaction mixture was then acidfied adding drops of 3 Molar HCl. The white precipitate formed (benzoic acid) was collected and IR analysis was used to verify the product.
1. What is the role of sodium sulfite? How does it work? Please use an equation to explain this.
2. Why was the work-up step so important in this experiment? What can be found in the top layer, and the bottom layer in the extraction step?
3. Why was a strong acid (3M HCl) used for acidification of the alkaline phase?
4. How would a solubility test and a carboxylic acid test help to confirm that a carboxylic acid is your product?
Rb has two naturally occurring isotopes 85Rb and 87Rb, with masses 84.9118 amu and 86.9092 amu, respectively. The average atomic mass is 85.468 amu.
2.00 L of H2 at a pressure of 398 torr and 1.00 L of N2 at an unknown pressure. If the total pressure in the flasks is 331 torr after the stopcock is opened,
A 4.22g sample of CuS was added to excess HCl, and the resulting H2S was collected over water. What volume of H2S was collected at 32 degrees celsius
How many grams of MnSO4 can be prepared from the reaction of 15.0 g of KMnO4 with 22.6 g of H2SO3.
If you have 240.0 mL of water at 25.00 °C and add 100.0 mL of water at 95.00 °C, what is the final temperature of the mixture.
Question about Half life problem, We are performing an experiment using half-life =4.5 x 10^3 days labeled phenylalanine in which the five atomic hydrogens are labeled.To perform the experiment
2.0 moles of a gas was collected in the lab at a temperature of 1.1 degrees C and a pressure of 9.5 atm. What volume will the gas occupy under these conditions.
Determine the temperature change is caused by heat energy and using a beaker that contains 100 mL of H 2 O thermally insulated from its surroundings, one mol of solid CaCl 2 is mixed and solution is stirred
When gaseous nitrogen,hydrogen & ammonia are mixedin a closed vessel at room temperature no apparent change in the concetrations of regardless of the original amount of gases.
Generation and use of a standard curve and serial dilutions, This lab provided a 100mM Glucose standard solution which you are required to dilute with water to give final concentrations of 0,0.4,0.8,1.2,1.6 and 2.0 mmol/L glucose in a final volume..
The decay constant for strontium-90 = 0.0247y-1. if 10.0 g decay for exactly 60 years then determine how many grams of strontium-90 remain.
CO(g) + 2H2(g) = CH3OH(g) , what is the equilibrium constant? , where CH3OH = 0.0412 atm, H2 = 0.274 atm, CO = 0.914 atm.
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