1. Which of the following is an intermediate in the mechanism of hydrolysis of the ester...
1. Which of the following is an intermediate in the mechanism of hydrolysis of the ester shown below?
all of the above
2. How does a base catalyst increase the rate of reaction?
|
by removing an electron from the reactant |
|
by donating a proton to a reactant |
|
by donating an electron to a reactant |
|
by removing a proton from the reactant |
|
None of the above |
3. How does a metal catalyst increase the rate of reaction?
|
The metal ions coordinate with the atoms that have lone-pair electrons. |
|
By removing a proton from the reactant. |
|
By donating a proton to a reactant. |
|
None of the above. |
Homework Answers
Add Answer to:
1. Which of the following is an intermediate in the mechanism of
hydrolysis of the ester...
Complete the electron-pushing mechanism for the following base-promoted hydrolysis of an ester. Add atoms, bonds, nonbonding...
Complete the electron-pushing mechanism for the following
base-promoted hydrolysis of an ester. Add atoms, bonds, nonbonding
electron pairs (lone pairs), charges, and curved arrows where
indicated
Complete the electron-pushing mechanism for the following base-promoted hydrolysis of an ester. Add atoms, bonds, nonbonding...
Complete the electron-pushing mechanism for the following base-promoted hydrolysis of an ester. Add atoms, bonds, nonbonding electron pairs (lone pairs), charges, and curved arrows. 2:05 otot O . Io:
Complete the electron-pushing mechanism for the following base-promoted hydrolysis of an ester. Add atoms, bonds, nonbonding electron pairs (lone pairs), charges, and curved arrows.
Complete the electron-pushing mechanism for the following base-promoted hydrolysis of an ester. Add atoms, bonds, nonbonding electron pairs (lone pairs), charges, and curved arrows.
Q2. Complete the following base hydrolysis reaction of ester. (1) NaOH (2) (H2O) Q3. Write down...
Q2. Complete the following base hydrolysis reaction of ester. (1) NaOH (2) (H2O) Q3. Write down the base (KOH) catalyzed ester hydrolysis mechanism of the following reaction. OH ol 우
6. NHI can react with BFs, forming NHMBFs. In this reaction, A the NHI acts as a Bronsted base, accepting a proton...
6. NHI can react with BFs, forming NHMBFs. In this reaction, A the NHI acts as a Bronsted base, accepting a proton from the BF molecule. B. the NHI acts as a Lewis base, donating a proton to the BF, molecule. C. the NHacts as a Brunsted acid, donating a proton to the BF, molecule. D. the BF, molecule acts as a Lewis acid, accepting an electron pair from the NH3 molecule to form a coordinate covalent bond. E the...
Paragraph Styles 6. ... 7 1. Why is an ester less reactive to nucleophilic acyl substitution...
Paragraph Styles 6. ... 7 1. Why is an ester less reactive to nucleophilic acyl substitution than an acid chloride? A) Chloride is a better leaving group B) Oxygen is better at donating electron density into the carbonyl with added resonance stability. C) Chloride is a better leaving group and compared to chlorine, oxygen is better at donating electron density into the carbonyl with added resonance stability D) The alkoxy anion is less basic than the chloride anion. 2. What...
8) An acid (1.5pts) produces hydroxide ions when dissolved in water. donates protons in a proton...
8) An acid (1.5pts) produces hydroxide ions when dissolved in water. donates protons in a proton transfer reaction. does none of the above. donates electrons in an electron transfer reaction. changes the color of phenolphthalein indicator from colorless to pink. 9) A base (1.5pts) produces hydrogen ions in solution. donates a proton in a proton transfer reaction. causes phenolphthalein indicator to change from colorless to pink. accepts electrons in an electron transfer reaction. does none of the above. 10) Which,...
Which of the following is a true statement about the Lewis definition of acids and bases? Select the correct answer below: The Lewis definition of acids and bases is based on donating or accepting an electron pair.
Which of the following is a true statement about the Lewis definition of acids and bases? Select the correct answer below: The Lewis definition of acids and bases is based on donating or accepting an electron pair. O The Lewis definition of acids and bases is based on the production of HO or OH ions in water solutions O The Lewis definition of acids and bases is based on donating or accepting a proton. O none of the above MORE...
D See Hint In enolase, the reaction mechanism uses lysine at position 345 as a base...
D See Hint In enolase, the reaction mechanism uses lysine at position 345 as a base to remove a proton from 2-phosphoglycerate as the first step. However, this results in an increased negative charge on the carboxylate group of the resulting carbanion intermediate. There are Mg2+ ions near the carboxylate part that function to - the stability of the carbanion intermediate prior to glutamic acid at position 211, donating a proton to the intermediate in order to form the final...
PLEASE ANSWER EVERYTHING Using curved arrows, propose a mechanism for the following reaction. In addition, draw...
PLEASE ANSWER EVERYTHING
Using curved arrows, propose a mechanism for the following reaction. In addition, draw in all lone pair of electrons and positive charges that are needed. Finally, label the Lewis acid, Lewis base, nucleophile, and electrophile in each step. acid catalyst Paraldehyde(a sedative and hyptonic agent)
Complete the electron-pushing mechanism for the following
base-promoted hydrolysis of an ester. Add atoms, bonds, nonbonding
electron pairs (lone pairs), charges, and curved arrows where
indicated
Complete the electron-pushing mechanism for the following base-promoted hydrolysis of an ester. Add atoms, bonds, nonbonding electron pairs (lone pairs), charges, and curved arrows. 2:05 otot O . Io:
Q2. Complete the following base hydrolysis reaction of ester. (1) NaOH (2) (H2O) Q3. Write down the base (KOH) catalyzed ester hydrolysis mechanism of the following reaction. OH ol 우
6. NHI can react with BFs, forming NHMBFs. In this reaction, A the NHI acts as a Bronsted base, accepting a proton from the BF molecule. B. the NHI acts as a Lewis base, donating a proton to the BF, molecule. C. the NHacts as a Brunsted acid, donating a proton to the BF, molecule. D. the BF, molecule acts as a Lewis acid, accepting an electron pair from the NH3 molecule to form a coordinate covalent bond. E the...
Paragraph Styles 6. ... 7 1. Why is an ester less reactive to nucleophilic acyl substitution than an acid chloride? A) Chloride is a better leaving group B) Oxygen is better at donating electron density into the carbonyl with added resonance stability. C) Chloride is a better leaving group and compared to chlorine, oxygen is better at donating electron density into the carbonyl with added resonance stability D) The alkoxy anion is less basic than the chloride anion. 2. What...
8) An acid (1.5pts) produces hydroxide ions when dissolved in water. donates protons in a proton transfer reaction. does none of the above. donates electrons in an electron transfer reaction. changes the color of phenolphthalein indicator from colorless to pink. 9) A base (1.5pts) produces hydrogen ions in solution. donates a proton in a proton transfer reaction. causes phenolphthalein indicator to change from colorless to pink. accepts electrons in an electron transfer reaction. does none of the above. 10) Which,...
Which of the following is a true statement about the Lewis definition of acids and bases? Select the correct answer below: The Lewis definition of acids and bases is based on donating or accepting an electron pair. O The Lewis definition of acids and bases is based on the production of HO or OH ions in water solutions O The Lewis definition of acids and bases is based on donating or accepting a proton. O none of the above MORE...
D See Hint In enolase, the reaction mechanism uses lysine at position 345 as a base to remove a proton from 2-phosphoglycerate as the first step. However, this results in an increased negative charge on the carboxylate group of the resulting carbanion intermediate. There are Mg2+ ions near the carboxylate part that function to - the stability of the carbanion intermediate prior to glutamic acid at position 211, donating a proton to the intermediate in order to form the final...
PLEASE ANSWER EVERYTHING
Using curved arrows, propose a mechanism for the following reaction. In addition, draw in all lone pair of electrons and positive charges that are needed. Finally, label the Lewis acid, Lewis base, nucleophile, and electrophile in each step. acid catalyst Paraldehyde(a sedative and hyptonic agent)
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