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identify heating apparatuses suitable for use with round
bottom flasks
Identify heating apparatuses suitable for use...
Fractionating column Thermometer Thermometer adapter Distilling head Round-bottom distilling flask Clamps Condenser Water tubing for cooling...
Fractionating column Thermometer Thermometer adapter Distilling head Round-bottom distilling flask Clamps Condenser Water tubing for cooling Vacuum adapter Boiling chips/stones/beads Round-bottom receiving flask Heating mantle Beaker for hot water bath Hot plate Closed-end capillary tubes (same as used with melting point) Small or medium test tube Rubber bands Reagents 1. Ethanol 2. DI water Above are the materials and products used in the fractional distillation procedure. Come up with 2 aspects of the protocol that are not green.
Which procedure cannot be performed on a hot plate, requiring a Bunsen burner instead? Select one:...
Which procedure cannot be performed on a hot plate, requiring a Bunsen burner instead? Select one: O Heating a solvent to help the solute dissolve O Heating an isolated solid to dry it O Heating a crucible to remove water from a hydrate O Heating water to boiling for a water bath
When appropriate identify oxidizing and reducing agents. . A 350 mL round-bottom flask is weighed and...
When appropriate identify oxidizing and reducing agents. . A 350 mL round-bottom flask is weighed and found to have a mass of 114.55 g. A few milliliters of an casily vaporized liquid are added to the flask and the flask is immersed in a boiling water bath. All of the liquid vaporizes at the boiling temperature of water, filling the flask with vapor. When all of the liquid has vaporized, the flask is removed from the bath, cooled, dried, and...
Benzydrol will be recrystallized from hexane during this experiment. Please identify the following statements about recrystallization...
Benzydrol will be recrystallized from hexane during this experiment. Please identify the following statements about recrystallization as true or false. Select all that are True. 1 Start heating the flask with just enough solvent in the flask to cover the sample. 2 When you collect your crystals you can wash them with a small amount of the recrystallization solvent, but you should cool the solvent down in an ice bath before using it. 3 If you are short on time,...
than other labs. These are toxicity, volatility, and flammability. We routinely use toxic organic solvents like...
than other labs. These are toxicity, volatility, and flammability. We routinely use toxic organic solvents like methanol and acetone that are volatile (have low boiling points), but even solid organic materials can produce vapors that may be toxic. Furthermore, organic materials are flammable, and solvent vapors in the air can and do produce explosive mixtures. You should take some general precautions when doing organic chemistry: Do not get solutions on your skin. You do not need to always wear gloves...
R1= OCH2C6H5, R2= OCH3 Identify the limiting reagent and calculate the theoretical yield? NaOH H3C -H20...
R1= OCH2C6H5, R2= OCH3
Identify the limiting reagent and calculate the theoretical
yield?
NaOH H3C -H20 R2 R1 Procedure: 1. Prepare a water bath for use later in the experiment by filling a pyrex dish -half full of water and heating it to 70 °C on a stirrer/hot plate. 2. Combine 3.5 mmol of your aldehyde and 3.5 mmol of your ketone with 2 mL of 95% ethanol in a 25- mL round-bottom flask and swirl the mixture briefly. 3....
A container is filled with water and the pressure at the bottom of the container is...
A container is filled with water and the pressure at the bottom of the container is P. Then the container is emptied halfway and topped off with oil of density 800 kg/m3, which floats on top of the water. What is the pressure at the bottom of the container now? A) A pressure > P B) The same pressure P C) A pressure < P D) This is not possible to answer with the information given 4. A camper heats...
List the procedural steps, from start to finish, that are required to perform a steam distillation....
List the procedural steps, from start to finish, that are required to perform a steam distillation. Drag and drop the answers into the box in the correct order. All answers must be used. Start of lab Record the unknown code of the spice. Weigh your assigned sample and place it into a 100-mL round bottom flask and add 40 mL of water. Extract the essential oil layer into 20 mL dichloromethane. Drain the lower organic layer into the 125-mL Erlenmeyer...
What is the limiting reagent in this experiment? Acetophenone or aqueous bleach? 1. Add about 1.0...
What is the limiting reagent in this experiment? Acetophenone or
aqueous bleach?
1. Add about 1.0 g (measured accurately) of acetophenone to 40 mL of the bleach solution (5% NaCl in water - this reactant should be included in your table of reagents!) in a 100 mL round bottom flask equipped with a magnetic stirrer. Clamp the flask in the fume hood above a stir plate. 2. After the initial reaction has subsided, boil the reaction mixture gently for 5...
How does the acetone destroy the unreacted hypochlorite? 1. Add about 1.0 g (measured accurately) of...
How does the acetone destroy
the unreacted hypochlorite?
1. Add about 1.0 g (measured accurately) of acetophenone to 40 mL of the bleach solution (5% NaCl in water - this reactant should be included in your table of reagents!) in a 100 mL round bottom flask equipped with a magnetic stirrer. Clamp the flask in the fume hood above a stir plate. 2. After the initial reaction has subsided, boil the reaction mixture gently for 5 - 10 minutes using...
Which procedure cannot be performed on a hot plate, requiring a Bunsen burner instead? Select one: O Heating a solvent to help the solute dissolve O Heating an isolated solid to dry it O Heating a crucible to remove water from a hydrate O Heating water to boiling for a water bath
When appropriate identify oxidizing and reducing agents. . A 350 mL round-bottom flask is weighed and found to have a mass of 114.55 g. A few milliliters of an casily vaporized liquid are added to the flask and the flask is immersed in a boiling water bath. All of the liquid vaporizes at the boiling temperature of water, filling the flask with vapor. When all of the liquid has vaporized, the flask is removed from the bath, cooled, dried, and...
than other labs. These are toxicity, volatility, and flammability. We routinely use toxic organic solvents like methanol and acetone that are volatile (have low boiling points), but even solid organic materials can produce vapors that may be toxic. Furthermore, organic materials are flammable, and solvent vapors in the air can and do produce explosive mixtures. You should take some general precautions when doing organic chemistry: Do not get solutions on your skin. You do not need to always wear gloves...
R1= OCH2C6H5, R2= OCH3
Identify the limiting reagent and calculate the theoretical
yield?
NaOH H3C -H20 R2 R1 Procedure: 1. Prepare a water bath for use later in the experiment by filling a pyrex dish -half full of water and heating it to 70 °C on a stirrer/hot plate. 2. Combine 3.5 mmol of your aldehyde and 3.5 mmol of your ketone with 2 mL of 95% ethanol in a 25- mL round-bottom flask and swirl the mixture briefly. 3....
List the procedural steps, from start to finish, that are required to perform a steam distillation. Drag and drop the answers into the box in the correct order. All answers must be used. Start of lab Record the unknown code of the spice. Weigh your assigned sample and place it into a 100-mL round bottom flask and add 40 mL of water. Extract the essential oil layer into 20 mL dichloromethane. Drain the lower organic layer into the 125-mL Erlenmeyer...
What is the limiting reagent in this experiment? Acetophenone or
aqueous bleach?
1. Add about 1.0 g (measured accurately) of acetophenone to 40 mL of the bleach solution (5% NaCl in water - this reactant should be included in your table of reagents!) in a 100 mL round bottom flask equipped with a magnetic stirrer. Clamp the flask in the fume hood above a stir plate. 2. After the initial reaction has subsided, boil the reaction mixture gently for 5...
How does the acetone destroy
the unreacted hypochlorite?
1. Add about 1.0 g (measured accurately) of acetophenone to 40 mL of the bleach solution (5% NaCl in water - this reactant should be included in your table of reagents!) in a 100 mL round bottom flask equipped with a magnetic stirrer. Clamp the flask in the fume hood above a stir plate. 2. After the initial reaction has subsided, boil the reaction mixture gently for 5 - 10 minutes using...
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