Homework Answers
Add Answer to:
It is recommended that the glassware used in the Grignard experiment not be rinsed with acetone...
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....
Why is it important to oven dry or flame dry glassware before setting up a Grignard...
Why is it important to oven dry or flame dry glassware before setting up a Grignard reagent formation or a Grignard reaction? Organomagnesium reagents react readily with water faster than with the desired starting material, lowering the overall yield Water will make the reaction blow up Wet glassware is slippery Too many salts will form in the reaction
1. will a Grignard reagent be formed if acetone is used as solvent instead of diethyl...
1. will a Grignard reagent be formed if acetone is used as solvent instead of diethyl ether. (reaction of bromobenzene with magnesium) 2. what is the product if reacting benzaldehyde with the Grignard reagent from Q1 in acetone?
only question # 2 a. using anhydrous ether b. not rinsing glassware with acetone before the...
only question # 2
a. using anhydrous ether b. not rinsing glassware with acetone before the experiment c. using magnesium filings instead of "chunk" magnesium d. initiating the reaction in a test tube e. using an ammonium chloride/hydrochloric acid mixture to acidity the reaction mixture instead of using concentrated sulfuric acid. 2. Give the products of the reaction of methylmagnesium chloride with a. acetaldehyde me mac b. acetone c. ethyl acetate (1 equivalent per Grignard) d. ethyl acetate (2 equivalents...
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...
In an experiment we used, Grignard reagent reacted with benzophenone, in a two stepped process in...
In an experiment we used, Grignard reagent reacted with benzophenone, in a two stepped process in order to create triphenylmethanol If you use excess Grignard reagent in this reaction, what contaminant would it yield after hydrolysis with HCl? Would you expect this contaminant to be removed in the extraction step?
Please only answer 3 P Grignard 1. During the formation of the Grignard reagent, the solution...
Please only answer 3
P
Grignard 1. During the formation of the Grignard reagent, the solution can boil without addition of external heat. Explain 2. Explain why acetone and water should be excluded from the reaction vessel during the formation of the Grignard reagent. 3. At what stage of the procedure can water be allowed to come into contact with the reaction solution? 4. Why is the dry ice crushed before use and why should you wait to crush the...
Grignard reagent THE GRIGNARD REAGENT-PREPARATION AND REACTION In this experiment, you will prepa...
i need help with the postlab 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....
I did an experiment where I synthesized 2-phenyl-2-propanol using the grignard reaction. please help me answer these lab questions Reagents Moles of Reagent 0.00142 moles (0.224 g)bromoben...
I did an experiment where I synthesized
2-phenyl-2-propanol using the grignard reaction. please help me
answer these lab questions
Reagents Moles of Reagent 0.00142 moles (0.224 g)bromobenzene 0.00712 mol (0.173 g) 2 mL of THF (n/a moles) tetrahydrofuran 0.00142 mol (0.083g, 0.11mL) acetone, HPLC grade, anh Reagent Name FW 157.75 24.31 n/a 58 Comments Mg powder grind before using must be anhydrous must be anhydrous Pre-Lab Assignment: 1. Determine the volume (mL) of bromobenzene needed for the experiment. Obtain the...
Grignard Reaction 1. Draw your complete reaction, including the formation of the Grignard reagent and the...
Grignard Reaction 1. Draw your complete reaction, including the formation of the Grignard reagent and the reaction with your carbonyl compound. Below each reagent, write its molecular weight and density (if a liquid). Also write how much of each material you will use in ml (if liquid), grams, and moles. Also include the molecular weight and melting point of your final product. 2. How many moles of Grignard reagent are you synthesizing? What mass of water could fully react with...
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....
Why is it important to oven dry or flame dry glassware before setting up a Grignard reagent formation or a Grignard reaction? Organomagnesium reagents react readily with water faster than with the desired starting material, lowering the overall yield Water will make the reaction blow up Wet glassware is slippery Too many salts will form in the reaction
only question # 2
a. using anhydrous ether b. not rinsing glassware with acetone before the experiment c. using magnesium filings instead of "chunk" magnesium d. initiating the reaction in a test tube e. using an ammonium chloride/hydrochloric acid mixture to acidity the reaction mixture instead of using concentrated sulfuric acid. 2. Give the products of the reaction of methylmagnesium chloride with a. acetaldehyde me mac b. acetone c. ethyl acetate (1 equivalent per Grignard) d. ethyl acetate (2 equivalents...
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...
Please only answer 3
P
Grignard 1. During the formation of the Grignard reagent, the solution can boil without addition of external heat. Explain 2. Explain why acetone and water should be excluded from the reaction vessel during the formation of the Grignard reagent. 3. At what stage of the procedure can water be allowed to come into contact with the reaction solution? 4. Why is the dry ice crushed before use and why should you wait to crush the...
i need help with the postlab 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....
I did an experiment where I synthesized
2-phenyl-2-propanol using the grignard reaction. please help me
answer these lab questions
Reagents Moles of Reagent 0.00142 moles (0.224 g)bromobenzene 0.00712 mol (0.173 g) 2 mL of THF (n/a moles) tetrahydrofuran 0.00142 mol (0.083g, 0.11mL) acetone, HPLC grade, anh Reagent Name FW 157.75 24.31 n/a 58 Comments Mg powder grind before using must be anhydrous must be anhydrous Pre-Lab Assignment: 1. Determine the volume (mL) of bromobenzene needed for the experiment. Obtain the...
Grignard Reaction 1. Draw your complete reaction, including the formation of the Grignard reagent and the reaction with your carbonyl compound. Below each reagent, write its molecular weight and density (if a liquid). Also write how much of each material you will use in ml (if liquid), grams, and moles. Also include the molecular weight and melting point of your final product. 2. How many moles of Grignard reagent are you synthesizing? What mass of water could fully react with...
Most questions answered within 3 hours.
-
(CO 2) A field can be added to a report to
values for two or more...
asked 2 minutes ago -
Identify 3 research scenarios that might provide a low,
medium, and high degree of variability in...
asked 26 minutes ago -
how
does gravity affect the trajectory of projectile? what would be the
shape of the trajactory...
asked 1 hour ago -
Two small plastic spheres are given positive electrical charges.
When they are a distance of 15.4...
asked 1 hour ago -
An acidic solution containing gold ions is
electrolyzed, producing gaseous oxygen (from water) at the anode...
asked 1 hour ago -
Assume that the population of Mexico is 128
million and that the population increases 1.01
percentannually....
asked 2 hours ago -
Can someone please help me add appropriate descriptive
comments to each line of code in the...
asked 2 hours ago -
Romeo wishes to throw a bouquet of flowers to Juliet, who is on
a second-story balcony,...
asked 3 hours ago -
Why is QE a controversial monetary policy tool.
A. It may lead to excessive inflation.B. By...
asked 3 hours ago -
Principles of Programming midterm study guide help!
1.)
______ Which of the following would reference the...
asked 3 hours ago -
A finite potential well has depth U0 = 2.78 eV . What is the
penetration distance...
asked 4 hours ago -
1. The bus bars of a power station are in two sections A and B
separated...
asked 4 hours ago