Homework Answers
During the workup of a reaction mixture to isolate the product, a organic solvent should be added to the reaction mixture to give the extraction from the aqueous layer. The chosen organic layer should have lower boiling point value than that of the product and the ideal boiling point of the solvent should be around 30-90 0C, which can easily removed from the rotary evaporator pressure.
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5. When isolation of a product from a reaction mixture is carried out, a solvent is...
2. Aliquid mixture contains two substances whose boiling points are only 10°C apart. Which method of...
2. Aliquid mixture contains two substances whose boiling points are only 10°C apart. Which method of distillation should be utilized to obtain a clean separation of the two substances. Explain. 3. Which of the following pairs of liquids could be separated by simple distillation? Why? a. Ethyl acetate (b.p. 77°C) & Phenol (b.p. 181.7°C) b. Cyclohexane (b.p. 80.7°C) & Toluene (b.p. 111C) C. Hexane (b.p. 69.10C) & Ethylbenzene (b.p. 136°C) 4. What effect would (a) an increase or (b) a...
1. Eugenol (clove oil) has a reported boiling point of 255° C at 760 mm Hg....
1. Eugenol (clove oil) has a reported boiling point of 255° C at 760 mm Hg. When making a determination of the boiling point at reduced pressures during vacuum distillations, a nomography chart can be used o determine the corrected boiling point. What would be the boiling point of Eugenol at 25 mm Hg? NOMOGRAPH 2. Aliquid mixture contains two substances whose boiling points are only 10°C apart. Which method of distillation should be utilized to obtain a clean separation...
Create a separation scheme flow chart/diagram to isolate methyl salicylate from a product mixture containing the...
Create a separation scheme flow chart/diagram to isolate methyl salicylate from a product mixture containing the following: Methyl salicylate, methanol, concentrated sulfuric acid. Lab procedure for separation: Extract with 25mL dichloromethane. Drain the bottom organic layer into a beaker. Repeat the extraction with another 25mL portion of dichloromethane, isolate the bottom layer, and then combine it with the first dichloromethane extract. Pour the combined extracts back into the funnel and wash the solution with 25mL of water. Drain the lower...
Question 7 (1 point) To extract the reaction product from the aqueous reaction mixture, dichloromethane will...
Question 7 (1 point) To extract the reaction product from the aqueous reaction mixture, dichloromethane will be added and liquid-liquid extraction will be carried out. Which layer will be the organic (dichloromethane) layer? The density of dichloromethane is 1.33 g/mL. bottom layer depends on the day the middle layer top layer Question 1 (1 point) What class of compound do you always get if you reduce an aldehyde? O 2º alcohol O carboxylic acid ketone 1° alcohol
Oral Chemistry spermat Laboratory Me (CHEM Land ) 4. WHY is this reaction carried out in...
Oral Chemistry spermat Laboratory Me (CHEM Land ) 4. WHY is this reaction carried out in a solvent mixture that contains both water in which the 10% NaOH is dissolved) and alcohol ? Why can't either solvent be used alone ? 5. Draw TWO acceptable resonance structures for the carbanion produced when NaOH reacts with acetone. 6. What is the relative purity of the product based upon its melting range? What should be the approximate location of the C-0 in...
In a lab, we are to draw and carry out a purification scheme for the carboxylic...
In a lab, we are to draw and carry out a purification scheme for
the carboxylic acid product of a Grignard reaction we've performed,
in order to then identify the starting material we used using the
melting point of our carboxylic acid product.
A flowchart of our purification scheme is required, indicating
where all molecules (in their current ionization states) are at
each step, ending with the dry carboxylic acid at the end.
Once the dry ice has been thoroughly...
name 5 characteristics that the solvent to be used must have when carrying out a reaction
name 5 characteristics that the solvent to be used must have when carrying out a reaction
29. Which are the major reaction products of the following reaction, which is carried out in...
29. Which are the major reaction products of the following reaction, which is carried out in an inert solvent? AICI: solvent NO2 Oló - o 02 a) I and II b) III and IV c) I and IV d) II and III 30. Which is the major product of the following reactions? CH3CI Cl2 K2Cr207 FeCl3 FeCl3 H2SO4 a) para-chlorobenzoic acid b) meta-chlorobenzoic acid c) a mixture of para- and meta-chlorobenzoic acid d) a mixture of ortho- and para-chlorobenzoic acid...
please decided to carry out the synthesis using diethyl ether as the (Due to its low...
please
decided to carry out the synthesis using diethyl ether as the (Due to its low boiling point diethyl ether is a good, though highly flammable, bulk solvent for many organic reactions because it is readily removed from the reaction mixture.) She placed the appropriate mass of -butené in the diethyl ether solvent, then added MBr to start the reaction. She isolated a product and obtained a proton NMR spectrum for the sample. The spectrum that appeared on the screen...
i need help with post questions, thanks Product Isolation After stirring the reaction for 5 minutes...
i need help with post questions, thanks
Product Isolation After stirring the reaction for 5 minutes and allowing the reaction mixture to cool (the reaction can be exothermic), remove the Claisen head from the conical vial. Slowly add 3 M HCl(aq) drop-wise. The solid may need to be broken up with a stirring rod or a pipet. Continue to add acid until the aqueous phase (bottom layer) tests positive with pH paper. Extractions can be done using the conical funnel...
2. Aliquid mixture contains two substances whose boiling points are only 10°C apart. Which method of distillation should be utilized to obtain a clean separation of the two substances. Explain. 3. Which of the following pairs of liquids could be separated by simple distillation? Why? a. Ethyl acetate (b.p. 77°C) & Phenol (b.p. 181.7°C) b. Cyclohexane (b.p. 80.7°C) & Toluene (b.p. 111C) C. Hexane (b.p. 69.10C) & Ethylbenzene (b.p. 136°C) 4. What effect would (a) an increase or (b) a...
1. Eugenol (clove oil) has a reported boiling point of 255° C at 760 mm Hg. When making a determination of the boiling point at reduced pressures during vacuum distillations, a nomography chart can be used o determine the corrected boiling point. What would be the boiling point of Eugenol at 25 mm Hg? NOMOGRAPH 2. Aliquid mixture contains two substances whose boiling points are only 10°C apart. Which method of distillation should be utilized to obtain a clean separation...
Question 7 (1 point) To extract the reaction product from the aqueous reaction mixture, dichloromethane will be added and liquid-liquid extraction will be carried out. Which layer will be the organic (dichloromethane) layer? The density of dichloromethane is 1.33 g/mL. bottom layer depends on the day the middle layer top layer Question 1 (1 point) What class of compound do you always get if you reduce an aldehyde? O 2º alcohol O carboxylic acid ketone 1° alcohol
Oral Chemistry spermat Laboratory Me (CHEM Land ) 4. WHY is this reaction carried out in a solvent mixture that contains both water in which the 10% NaOH is dissolved) and alcohol ? Why can't either solvent be used alone ? 5. Draw TWO acceptable resonance structures for the carbanion produced when NaOH reacts with acetone. 6. What is the relative purity of the product based upon its melting range? What should be the approximate location of the C-0 in...
In a lab, we are to draw and carry out a purification scheme for
the carboxylic acid product of a Grignard reaction we've performed,
in order to then identify the starting material we used using the
melting point of our carboxylic acid product.
A flowchart of our purification scheme is required, indicating
where all molecules (in their current ionization states) are at
each step, ending with the dry carboxylic acid at the end.
Once the dry ice has been thoroughly...
29. Which are the major reaction products of the following reaction, which is carried out in an inert solvent? AICI: solvent NO2 Oló - o 02 a) I and II b) III and IV c) I and IV d) II and III 30. Which is the major product of the following reactions? CH3CI Cl2 K2Cr207 FeCl3 FeCl3 H2SO4 a) para-chlorobenzoic acid b) meta-chlorobenzoic acid c) a mixture of para- and meta-chlorobenzoic acid d) a mixture of ortho- and para-chlorobenzoic acid...
please
decided to carry out the synthesis using diethyl ether as the (Due to its low boiling point diethyl ether is a good, though highly flammable, bulk solvent for many organic reactions because it is readily removed from the reaction mixture.) She placed the appropriate mass of -butené in the diethyl ether solvent, then added MBr to start the reaction. She isolated a product and obtained a proton NMR spectrum for the sample. The spectrum that appeared on the screen...
i need help with post questions, thanks
Product Isolation After stirring the reaction for 5 minutes and allowing the reaction mixture to cool (the reaction can be exothermic), remove the Claisen head from the conical vial. Slowly add 3 M HCl(aq) drop-wise. The solid may need to be broken up with a stirring rod or a pipet. Continue to add acid until the aqueous phase (bottom layer) tests positive with pH paper. Extractions can be done using the conical funnel...
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