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Question 1 1.25 pts What of the following should be taken into account when performing a...
Preparation of Triphenylmethanol Using the Grignard Reaction. RH ROOH CO TO R-R MgBr 1.ether 2.11-SO/10 Icther...
Preparation of Triphenylmethanol Using the Grignard Reaction.
RH ROOH CO TO R-R MgBr 1.ether 2.11-SO/10 Icther Grignard reagents are highly reactive and can undergo undesirable RCOH TH₂O side reactions if impurities such as water, carbon dioxide, or oxygen are present. If the organohalogen is added to the R-Mg-X magnesium too quickly, undesired coupling reactions can also occur. In this experiment, you will use 0.015 moles of either benzophenone or ethyl benzoate as the recipient of the phenylmagnesium bromide and this...
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...
Question 15 2.5 pts What reagent is missing in the following reaction? CN Reagent CH3MgBr followed...
Question 15 2.5 pts What reagent is missing in the following reaction? CN Reagent CH3MgBr followed by H30+ DIBALH followed by H30* LIAIH4 followed by H2O cat. HCI and H20 Question 16 2.5 pts An unknown compound shows an infrared absorption around 2250 cm (medium intensity). What structural fragment could be causing this absorption? carbonyl O-H nitrile ON-H Previous Next Question 17 2.5 pts Which pair of compounds would be classified as tautomers? . ale Conto ud.& 11 IV Question...
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....
T(N)=352 please I need the answer urgent Question 1 The following gas phase reaction produces ethanol...
T(N)=352 please I need the answer urgent
Question 1 The following gas phase reaction produces ethanol (C2H5OH) by catalytic hydrogenation of acetaldehyde (CH3CHO). The reaction reaches equilibrium at a temperature of T= T(N) and a pressure of 3 bar: CH,CHO(g) + H, (g) C,H,OH (8) The reactive system initially contains 1.5 moles of Hydrogen (Ha) for each mole of acetaldehyde (CH3CHO). The mixture is assumed to be an ideal gas. T(N) is the temperature corresponding to the student number as...
12:47 1 Exit Question 1 0.5 pts When 34.8 g of sodium chloride is dissolved in...
12:47 1 Exit Question 1 0.5 pts When 34.8 g of sodium chloride is dissolved in water, 2.31 kJ of energy is absorbed. Is the enthalpy of dissolution of NaCl exothermic or endothermic? Endothermic Exothermic Question 2 0.5 pts What is the balanced thermochemical equation for the combustion of two moles of gaseous acetylene, C2H2, with oxygen to produce carbon dioxide and water vapor at 24.59°C given that 2512 kJ of heat is released at a constant pressure of 1.14...
Question 4 1 pts Which of the following mole ratios CANNOT be derived from the reaction 2 502 (g) + O2 (g) + 2 H2...
Question 4 1 pts Which of the following mole ratios CANNOT be derived from the reaction 2 502 (g) + O2 (g) + 2 H20 (1) --> 2 H2SO4 (aq) ? 02 mol SO2 2 mol H2SO4 2 mol H2SO4 2 mol O2 0 1 mol O2 2 mol H20 O 2 mol O2 1 mol O2 2 mol H20 2 mol SO2 Question 1 1 pts What do the coefficients in a balanced equation tell us? Mark ALL that...
Question 1 9 pts Below is a partial data table with the hypothetical amounts of reagents...
Question 1 9 pts Below is a partial data table with the hypothetical amounts of reagents you used for the oxidation of borneol, plus the hypothetic final yield of product you obtained. reagent MW conc(M) d/g/mL) vol(mL) mass (mg) borneol 154.25 118.3 NaCl 1 0.15 Oxone 307.37 232.1 EtOAC 0.897 0.4 camphor 152.24 yield camphor (mg) 99.2 Using these amounts, calculate the following values. Answers should be reported to the correct level of significant figures. Note: equivalents are usually based...
please answer questions 9-12 Question 9 1 pts Which of the following statements describes the reactivity...
please answer questions 9-12
Question 9 1 pts Which of the following statements describes the reactivity of alkynes? An alkyne is an electron-rich molecule and therefore reacts as a nucleophile. When a symmetrical internal alkyne reacts with HBr, two products are formed. Unlike alkenes, alkynes fail to undergo electrophilic addition reactions The o bonds of alkynes are greater in energy than the rt bonds and, therefore, are more reactive Alkynes react as electrophiles, whereas alkenes react as nucleophiles What is...
CHEM 242 Score (100): TEST #3 July 24, 2014 (Thursday) NAME PART A. (3pt each) Please...
CHEM 242 Score (100): TEST #3 July 24, 2014 (Thursday) NAME PART A. (3pt each) Please circle the right answer. Where would be the absorption peak of a carbonyl, C-O, stretching in IR? a) at 3300 cm b) at 2980 cm cat 1700 crm d) at 1200 cm 2. Which one is the most reactive with a Grignard reagent in nucleophilic addition rxn? a) Acetone b) benzaldehyde c)Butanone d) acetophenone 3. What is the purpose of protonating a carbonyl? a)...
Preparation of Triphenylmethanol Using the Grignard Reaction.
RH ROOH CO TO R-R MgBr 1.ether 2.11-SO/10 Icther Grignard reagents are highly reactive and can undergo undesirable RCOH TH₂O side reactions if impurities such as water, carbon dioxide, or oxygen are present. If the organohalogen is added to the R-Mg-X magnesium too quickly, undesired coupling reactions can also occur. In this experiment, you will use 0.015 moles of either benzophenone or ethyl benzoate as the recipient of the phenylmagnesium bromide and this...
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...
Question 15 2.5 pts What reagent is missing in the following reaction? CN Reagent CH3MgBr followed by H30+ DIBALH followed by H30* LIAIH4 followed by H2O cat. HCI and H20 Question 16 2.5 pts An unknown compound shows an infrared absorption around 2250 cm (medium intensity). What structural fragment could be causing this absorption? carbonyl O-H nitrile ON-H Previous Next Question 17 2.5 pts Which pair of compounds would be classified as tautomers? . ale Conto ud.& 11 IV Question...
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....
T(N)=352 please I need the answer urgent
Question 1 The following gas phase reaction produces ethanol (C2H5OH) by catalytic hydrogenation of acetaldehyde (CH3CHO). The reaction reaches equilibrium at a temperature of T= T(N) and a pressure of 3 bar: CH,CHO(g) + H, (g) C,H,OH (8) The reactive system initially contains 1.5 moles of Hydrogen (Ha) for each mole of acetaldehyde (CH3CHO). The mixture is assumed to be an ideal gas. T(N) is the temperature corresponding to the student number as...
12:47 1 Exit Question 1 0.5 pts When 34.8 g of sodium chloride is dissolved in water, 2.31 kJ of energy is absorbed. Is the enthalpy of dissolution of NaCl exothermic or endothermic? Endothermic Exothermic Question 2 0.5 pts What is the balanced thermochemical equation for the combustion of two moles of gaseous acetylene, C2H2, with oxygen to produce carbon dioxide and water vapor at 24.59°C given that 2512 kJ of heat is released at a constant pressure of 1.14...
Question 4 1 pts Which of the following mole ratios CANNOT be derived from the reaction 2 502 (g) + O2 (g) + 2 H20 (1) --> 2 H2SO4 (aq) ? 02 mol SO2 2 mol H2SO4 2 mol H2SO4 2 mol O2 0 1 mol O2 2 mol H20 O 2 mol O2 1 mol O2 2 mol H20 2 mol SO2 Question 1 1 pts What do the coefficients in a balanced equation tell us? Mark ALL that...
Question 1 9 pts Below is a partial data table with the hypothetical amounts of reagents you used for the oxidation of borneol, plus the hypothetic final yield of product you obtained. reagent MW conc(M) d/g/mL) vol(mL) mass (mg) borneol 154.25 118.3 NaCl 1 0.15 Oxone 307.37 232.1 EtOAC 0.897 0.4 camphor 152.24 yield camphor (mg) 99.2 Using these amounts, calculate the following values. Answers should be reported to the correct level of significant figures. Note: equivalents are usually based...
please answer questions 9-12
Question 9 1 pts Which of the following statements describes the reactivity of alkynes? An alkyne is an electron-rich molecule and therefore reacts as a nucleophile. When a symmetrical internal alkyne reacts with HBr, two products are formed. Unlike alkenes, alkynes fail to undergo electrophilic addition reactions The o bonds of alkynes are greater in energy than the rt bonds and, therefore, are more reactive Alkynes react as electrophiles, whereas alkenes react as nucleophiles What is...
CHEM 242 Score (100): TEST #3 July 24, 2014 (Thursday) NAME PART A. (3pt each) Please circle the right answer. Where would be the absorption peak of a carbonyl, C-O, stretching in IR? a) at 3300 cm b) at 2980 cm cat 1700 crm d) at 1200 cm 2. Which one is the most reactive with a Grignard reagent in nucleophilic addition rxn? a) Acetone b) benzaldehyde c)Butanone d) acetophenone 3. What is the purpose of protonating a carbonyl? a)...
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