MW: Molecular Weight, mmol: Millimoles
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MW: Molecular Weight, mmol: Millimoles
mL MW mmol equivalents reagent bromobenzene magnesium benzophenone diethyl ether theoretical...
(2) After the addition of benzophenone to the mixture of bromobenzene and magnesium in diethyl ether,...
(2) After the addition of benzophenone to the mixture of bromobenzene and magnesium in diethyl ether, the reaction mixture slowly solidifies. Provide the structure of the solid, and explain with 10 words or less why the adduct precipitates out of solution. OH Triphenylmethanol is a
Compound Mol. Weight (g) mmol amount (in g or mL) melting point (°C) Density (g/mL) Ref....
Compound
Mol. Weight (g)
mmol
amount
(in g or mL)
melting point (°C)
Density
(g/mL)
Ref.
bromobenzene
157.01
4.00
0.628
n/a
1.491
1
magnesium powder
120.37
4.00
0.097
n/a
n/a
2
ethyl ether
74.12
n/a
5.00
n/a
0.706
3
benzophenone
182.22
3.8
0.692
47-51
n/a
4
triphenylmethanol
260.33
160-163
n/a
5
5% HCl (aq.)
36.46
n/a
2.00
n/a
n/a
6
With this information, what is the theoretical yield of
triphenylmethanol?
HO Br Mg MgBr ether ether bromobenzene benzophenone triphenylmethanol
MgBr + anhydrous ether Mg MW: 24.31 Grignard reagent MW: 157.02 R-X + Mg - R-X...
MgBr + anhydrous ether Mg MW: 24.31 Grignard reagent MW: 157.02 R-X + Mg - R-X + Mga Single Electron Transfer (SET) R-X - R + X- R + Mg - RM RMG + X- RMX Ph MgBr Ph Lo MaBr H (Ph)3COH Pn H20 MW:260.34 Grignard reaction • Volume of bromobenzene is 4.5 mL. • Density of bromobenzene is 1.5 g/ml • Mass of benzophenone is 6.75g • We assume 65% yield of the product (triphenylmethanol) was obtained in...
Weight of 5-mL conical vial weight of 5-mL concial vial and bromobanzene weight of trlphenylnethanol product...
Weight of 5-mL conical vial weight of 5-mL concial vial and bromobanzene weight of trlphenylnethanol product Weight Of bromobenzene Theoretical yield of trlpheny1meathanol Percentage yield of triphenylnethanol (The product must be light in color for full credit.) Write equations for the reactions between: (a) bromobenzene and magnesium. (b) the product of (a) and benzophenone. (Include curved arrows to show electron movement.) (c) the product of (b) and acid. (a) Write an equation showing the most significant side reaction; name Its...
2. Why should all of the glassware and the magnesium used for the preparation of the...
2. Why should all of the glassware and the magnesium used for the preparation of the Grignard reagent be any 3. What is the role of the anhydrous calcium chloride used in this experiment? 4. Calculate the theoretical yield (in g) of diphenylmethanol in this experiment. Show your work. Bp, ("C) Mp, (°C) Mass mmol Molecular Weight Calmo 157.02 density (g/ml) Volume (mL) bromobenzene 1560 2.7 17.2 benzaldehyde 1.50 .04 106.12 | 178. 1 1 11.56 1.5 14.7 magnesium 0.4...
Grignard reagent THE GRIGNARD REAGENT-PREPARATION AND REACTION In this experiment, you will prepa...
i need help with the prelab questions please
Grignard reagent THE GRIGNARD REAGENT-PREPARATION AND REACTION In this experiment, you will prepare a Grignard reagent, phenyl magnesium bromide, from bromobenzene and magnesium metal. The Grignard reagent will then react with methyl benzoate to form triphenylmethanol. Introduction Grignard reagents, such as organomagnesium halides, were discovered in 1910 by French chemist Victor Grignard. The Grignard reaction is one of the most general methods for carbon- carbon bond formation in all of organic chemistry....
posted by accident mmol density (g/ml) Mass () Volume (mL) 17.2 1. Complete the Table, excluding...
posted by accident
mmol density (g/ml) Mass () Volume (mL) 17.2 1. Complete the Table, excluding the shaded areas: Molecular Bp. (°C) Mp. (°C) Weight Colima bromobenzene 157.02 156,0 benzaldehyde 106,12 178.1 magnesium 24.31 diphenylmethanol 184.23 | 298, 0 69°C diethyl ether 74.12 34.6 1.SO 1.04 27 1.56 0.4 1.5 14.7 16.us 0.713
Please show work! o Name/Structure Bromobenzene Magnesium Phenylmagnesium bromide (Grignard reagent) 157.01 24.305 181.31 Formula Mass...
Please show work!
o Name/Structure Bromobenzene Magnesium Phenylmagnesium bromide (Grignard reagent) 157.01 24.305 181.31 Formula Mass (8) MW (g/mole) Moles Equivalents Volume (ml) Density (g/ml) 1.0 1.0
using pictures and a maximum of 10 words, explain why an oven-dried 5-ml conical vial and...
using pictures and a maximum of 10 words, explain why an oven-dried
5-ml conical vial and drying tube(step 1 and 2 of part 1) are used
in the reaction. do both please! also the notebook pages are the
procedure
(1) Using pictures and a maximum of 10 words, explain why an oven-dried 5-ml conical vial and drying tube (step 1 and 2 of Part 1) are used in the reaction. (2) After the addition of benzophenone to the mixture of...
The weight of triphenylmethanol is 0.060g QUESTIONS 1. (4 Points) What is the theoretical yield (in...
The weight of triphenylmethanol is 0.060g
QUESTIONS 1. (4 Points) What is the theoretical yield (in grams) and percent yield of your triphenyl- methanol product in this experiment? EXPERIMENTAL PROCEDURE All glassware used in a Grignard reaction must be scrupulously dried. Dry the following glassware in an oven at 110°C for at least 20 minutes: drying tube, Claisen adapter, 8 mL conical vial, 5 mL conical vial, air condenser, glass stirring rod, and a magnetic spinvane. DO NOT PLACE O-RINGS...
(2) After the addition of benzophenone to the mixture of bromobenzene and magnesium in diethyl ether, the reaction mixture slowly solidifies. Provide the structure of the solid, and explain with 10 words or less why the adduct precipitates out of solution. OH Triphenylmethanol is a
Compound
Mol. Weight (g)
mmol
amount
(in g or mL)
melting point (°C)
Density
(g/mL)
Ref.
bromobenzene
157.01
4.00
0.628
n/a
1.491
1
magnesium powder
120.37
4.00
0.097
n/a
n/a
2
ethyl ether
74.12
n/a
5.00
n/a
0.706
3
benzophenone
182.22
3.8
0.692
47-51
n/a
4
triphenylmethanol
260.33
160-163
n/a
5
5% HCl (aq.)
36.46
n/a
2.00
n/a
n/a
6
With this information, what is the theoretical yield of
triphenylmethanol?
HO Br Mg MgBr ether ether bromobenzene benzophenone triphenylmethanol
MgBr + anhydrous ether Mg MW: 24.31 Grignard reagent MW: 157.02 R-X + Mg - R-X + Mga Single Electron Transfer (SET) R-X - R + X- R + Mg - RM RMG + X- RMX Ph MgBr Ph Lo MaBr H (Ph)3COH Pn H20 MW:260.34 Grignard reaction • Volume of bromobenzene is 4.5 mL. • Density of bromobenzene is 1.5 g/ml • Mass of benzophenone is 6.75g • We assume 65% yield of the product (triphenylmethanol) was obtained in...
Weight of 5-mL conical vial weight of 5-mL concial vial and bromobanzene weight of trlphenylnethanol product Weight Of bromobenzene Theoretical yield of trlpheny1meathanol Percentage yield of triphenylnethanol (The product must be light in color for full credit.) Write equations for the reactions between: (a) bromobenzene and magnesium. (b) the product of (a) and benzophenone. (Include curved arrows to show electron movement.) (c) the product of (b) and acid. (a) Write an equation showing the most significant side reaction; name Its...
2. Why should all of the glassware and the magnesium used for the preparation of the Grignard reagent be any 3. What is the role of the anhydrous calcium chloride used in this experiment? 4. Calculate the theoretical yield (in g) of diphenylmethanol in this experiment. Show your work. Bp, ("C) Mp, (°C) Mass mmol Molecular Weight Calmo 157.02 density (g/ml) Volume (mL) bromobenzene 1560 2.7 17.2 benzaldehyde 1.50 .04 106.12 | 178. 1 1 11.56 1.5 14.7 magnesium 0.4...
i need help with the prelab questions please
Grignard reagent THE GRIGNARD REAGENT-PREPARATION AND REACTION In this experiment, you will prepare a Grignard reagent, phenyl magnesium bromide, from bromobenzene and magnesium metal. The Grignard reagent will then react with methyl benzoate to form triphenylmethanol. Introduction Grignard reagents, such as organomagnesium halides, were discovered in 1910 by French chemist Victor Grignard. The Grignard reaction is one of the most general methods for carbon- carbon bond formation in all of organic chemistry....
posted by accident
mmol density (g/ml) Mass () Volume (mL) 17.2 1. Complete the Table, excluding the shaded areas: Molecular Bp. (°C) Mp. (°C) Weight Colima bromobenzene 157.02 156,0 benzaldehyde 106,12 178.1 magnesium 24.31 diphenylmethanol 184.23 | 298, 0 69°C diethyl ether 74.12 34.6 1.SO 1.04 27 1.56 0.4 1.5 14.7 16.us 0.713
Please show work!
o Name/Structure Bromobenzene Magnesium Phenylmagnesium bromide (Grignard reagent) 157.01 24.305 181.31 Formula Mass (8) MW (g/mole) Moles Equivalents Volume (ml) Density (g/ml) 1.0 1.0
using pictures and a maximum of 10 words, explain why an oven-dried
5-ml conical vial and drying tube(step 1 and 2 of part 1) are used
in the reaction. do both please! also the notebook pages are the
procedure
(1) Using pictures and a maximum of 10 words, explain why an oven-dried 5-ml conical vial and drying tube (step 1 and 2 of Part 1) are used in the reaction. (2) After the addition of benzophenone to the mixture of...
The weight of triphenylmethanol is 0.060g
QUESTIONS 1. (4 Points) What is the theoretical yield (in grams) and percent yield of your triphenyl- methanol product in this experiment? EXPERIMENTAL PROCEDURE All glassware used in a Grignard reaction must be scrupulously dried. Dry the following glassware in an oven at 110°C for at least 20 minutes: drying tube, Claisen adapter, 8 mL conical vial, 5 mL conical vial, air condenser, glass stirring rod, and a magnetic spinvane. DO NOT PLACE O-RINGS...
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