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please help with number 6!
1.(2) What is the meaning of “E” in E-stilbene? 2.(4) What...
meso-stilbene dibromide when 0.90 g of E-stilbene are reacted 6.(4) Calculate the theoretical yield of meso-stilbene...
meso-stilbene dibromide when 0.90 g of E-stilbene are reacted 6.(4) Calculate the theoretical yield of meso-stilbene dibromide when 0.90 with excess bromine. 70) Write the structure of the product obtained when cyclohexene is used to decolorize bromine. containing solutions. Br Bra
1. What is the expected product melting point if the bromination of stilbene by PHPB is...
1. What is the expected product melting point if the bromination of stilbene by PHPB is completely stereospecific (anti addition)? 2. How would the melting point be affected if the reaction is not completely stereospecific and the dibromide product contains significant amounts of dl-stilbene dibromide, as well as the expected meso stilbene dibromide? Note the widely differing melting points of the meso and dl isomers. 3. What is the theoretical yield of dibromide product in the bromination reaction? 4. How...
alswering these questions. 1. If the bromination of trans-stilbene proceeded by syn addition what isomer(s) of...
alswering these questions. 1. If the bromination of trans-stilbene proceeded by syn addition what isomer(s) of stilbene dibromide would be formed? 2. If the bromination of trans-stilbene proceeded by anti addition what isomer(s) of stilbene dibromide would be formed? 3. Which isomer(s) of stilbene dibromide would be formed if the reaction followed Mechanism 4? Mechanism 4: Bromination is a multi-step process. In this mechanism, the pi bond attacks the bromine molecule as in Mechanism 1. Some time after the carbocation...
1. (4 pts) Given the masses of meso-stilbene dibromide and potassium hydroxide, please calculate the theoretical...
1. (4 pts) Given the masses of meso-stilbene dibromide and potassium hydroxide, please calculate the theoretical yield of the expected reaction product, diphenylacetylene, in grams. Your final answ appear in the box provided, or it will not be counted. Show all work to receive credit. Br +KOH + KOH Br diphenylacetylene meso-stilbene dibromide Molecular Weight (g/mol) 340.058 g/mol 56.105 g/mol mass (grams) 178.234 g/mol 0.800 g 0.400 g
please help fill in the white boxes Section: U Date: 4 the reaction equation below. Note:...
please help fill in the white boxes
Section: U Date: 4 the reaction equation below. Note: consider the equilibriugarshown on p. 42 of manual Acetic Acid o meso stilbene tribromide Br pr HB pyridinium tribromide E-stilbene meso-stibene dibromide By ropa: 2. Complete the following table, using your actual measured amounts. Greyed-out cells do not need to be filled. mp (°C) 122- 125 bp MW vol mass ass mmol equiv (C) (g/mol) (ml) (mg) 180.25 E-stilbene 123 acetic acid (glacial) 118...
please help with filling out this table and answering 8 questions Data Table Br H CH2CH3OH...
please help with filling out this table and answering 8
questions
Data Table Br H CH2CH3OH N-H Bry Chemicals H (E)-Stilbene Ethanol Pyridinium tribromide CsH.Br3N Stilbene Dibromide C14H12Br2 Molecular Formula C14H12 CHO Molecular Weight 180.25 g/mol 46.07 g/mol 319.82 g/mol 340.06 g/mol Physical Properties White solid Clear liquid White solid White solid Melting Point 122-124 °C N/A 127-133 °C 241-243 °C Amount needed 0.25 g 10 mL 0.5 g Mole needed 1.39 mmol 1.56 mmol Amount Used Moles Used Amount...
number 5 please EXPERIMENT 8: BROMINATION OF TRANS-STILBENE glacial acetic acid Objective: Execute first step of...
number
5 please
EXPERIMENT 8: BROMINATION OF TRANS-STILBENE glacial acetic acid Objective: Execute first step of two-step sequence to transform an alkene into an alkyne via a dihalide intermediate and use infrared spectroscopy to identify functional groups 5. Identify the limiting reagent for the reaction and explain why it is the limiting reagent. PLEASE NOTE: You will need to draw out a Table of Reagents in your notebook to ensure that you know how many moles of each reagent you...
Experiment #6: Synthesis of cyclohexene pre-lab (4 pts) 1) (2 pts) The mechanism for the formation...
Experiment #6: Synthesis of cyclohexene pre-lab (4 pts) 1) (2 pts) The mechanism for the formation of cyclohexene is shown below. - complete the mechanism with the appropriate arrows - identify the electrophile and nucleophile in steps 1 and 3. H-H2PO4 H2PO4. он Step I Step 2 H2o H2PO H,PO4 Step 3
number 5 please EXPERIMENT 8: BROMINATION OF TRANS-STILBENE Br3 Br glacial acetic acid Br Objective: Execute...
number
5 please
EXPERIMENT 8: BROMINATION OF TRANS-STILBENE Br3 Br glacial acetic acid Br Objective: Execute first step of two-step sequence to transform an alkene into an alkyne via a dihalide intermediate and use infrared spectros copy to identify functional groups 5. Identify the limiting reagent for the reaction and explain why it is the limiting reagent. PLEASE NOTE: You will need to draw out a Table of Reagents in your notebook to ensure that you know how many moles...
4.(6 pts) Determine the limiting reagent and the theoretical yield in the following situation. In a...
4.(6 pts) Determine the limiting reagent and the theoretical yield in the following situation. In a reaction 10.1g of Mg was reacted with 10.5 g of oxygen 2 Mg + O2 + 2MgO 5. An aqueous solution containing 10.0 g sodium hydroxide is added to an aqueous solution containing 10.0 g phosphoric acid. a. (4) Write and balance the complete chemical reaction. b. (4) Write the ionic acid the net ionic equations for the reaction. C. (4) Determine which reagent...
meso-stilbene dibromide when 0.90 g of E-stilbene are reacted 6.(4) Calculate the theoretical yield of meso-stilbene dibromide when 0.90 with excess bromine. 70) Write the structure of the product obtained when cyclohexene is used to decolorize bromine. containing solutions. Br Bra
alswering these questions. 1. If the bromination of trans-stilbene proceeded by syn addition what isomer(s) of stilbene dibromide would be formed? 2. If the bromination of trans-stilbene proceeded by anti addition what isomer(s) of stilbene dibromide would be formed? 3. Which isomer(s) of stilbene dibromide would be formed if the reaction followed Mechanism 4? Mechanism 4: Bromination is a multi-step process. In this mechanism, the pi bond attacks the bromine molecule as in Mechanism 1. Some time after the carbocation...
1. (4 pts) Given the masses of meso-stilbene dibromide and potassium hydroxide, please calculate the theoretical yield of the expected reaction product, diphenylacetylene, in grams. Your final answ appear in the box provided, or it will not be counted. Show all work to receive credit. Br +KOH + KOH Br diphenylacetylene meso-stilbene dibromide Molecular Weight (g/mol) 340.058 g/mol 56.105 g/mol mass (grams) 178.234 g/mol 0.800 g 0.400 g
please help fill in the white boxes
Section: U Date: 4 the reaction equation below. Note: consider the equilibriugarshown on p. 42 of manual Acetic Acid o meso stilbene tribromide Br pr HB pyridinium tribromide E-stilbene meso-stibene dibromide By ropa: 2. Complete the following table, using your actual measured amounts. Greyed-out cells do not need to be filled. mp (°C) 122- 125 bp MW vol mass ass mmol equiv (C) (g/mol) (ml) (mg) 180.25 E-stilbene 123 acetic acid (glacial) 118...
please help with filling out this table and answering 8
questions
Data Table Br H CH2CH3OH N-H Bry Chemicals H (E)-Stilbene Ethanol Pyridinium tribromide CsH.Br3N Stilbene Dibromide C14H12Br2 Molecular Formula C14H12 CHO Molecular Weight 180.25 g/mol 46.07 g/mol 319.82 g/mol 340.06 g/mol Physical Properties White solid Clear liquid White solid White solid Melting Point 122-124 °C N/A 127-133 °C 241-243 °C Amount needed 0.25 g 10 mL 0.5 g Mole needed 1.39 mmol 1.56 mmol Amount Used Moles Used Amount...
number
5 please
EXPERIMENT 8: BROMINATION OF TRANS-STILBENE glacial acetic acid Objective: Execute first step of two-step sequence to transform an alkene into an alkyne via a dihalide intermediate and use infrared spectroscopy to identify functional groups 5. Identify the limiting reagent for the reaction and explain why it is the limiting reagent. PLEASE NOTE: You will need to draw out a Table of Reagents in your notebook to ensure that you know how many moles of each reagent you...
Experiment #6: Synthesis of cyclohexene pre-lab (4 pts) 1) (2 pts) The mechanism for the formation of cyclohexene is shown below. - complete the mechanism with the appropriate arrows - identify the electrophile and nucleophile in steps 1 and 3. H-H2PO4 H2PO4. он Step I Step 2 H2o H2PO H,PO4 Step 3
number
5 please
EXPERIMENT 8: BROMINATION OF TRANS-STILBENE Br3 Br glacial acetic acid Br Objective: Execute first step of two-step sequence to transform an alkene into an alkyne via a dihalide intermediate and use infrared spectros copy to identify functional groups 5. Identify the limiting reagent for the reaction and explain why it is the limiting reagent. PLEASE NOTE: You will need to draw out a Table of Reagents in your notebook to ensure that you know how many moles...
4.(6 pts) Determine the limiting reagent and the theoretical yield in the following situation. In a reaction 10.1g of Mg was reacted with 10.5 g of oxygen 2 Mg + O2 + 2MgO 5. An aqueous solution containing 10.0 g sodium hydroxide is added to an aqueous solution containing 10.0 g phosphoric acid. a. (4) Write and balance the complete chemical reaction. b. (4) Write the ionic acid the net ionic equations for the reaction. C. (4) Determine which reagent...
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