Homework Answers
First statement is true.
Second statement is false because in polar acidic reaction , protonated leaving group will leave as neutral group.
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A common feature among polar acidic reactions is the use of an acid catalyst. True False...
In polar acidic reactions, the pairing of the electrophile and nucleophile consists of: (choose 2 answers)...
In polar acidic reactions, the pairing of the electrophile and nucleophile consists of: (choose 2 answers) Select all that apply weaker electrophile stronger nucleophile stronger electrophile weaker nucleophile Neutral nucleophiles are generally and nucleophiles. (Choose 2 words to best complete this statement.) Select all that apply negatively charged positively charged weaker stronger irreversible reversible Polar basic and polar acidic reactions have some similarities. Identify these similarities by checking all that apply Select all that apply Has an identifiable electrophile as...
D 1. The mechanistic steps that are commonly seen in polar acidic reactions are: (check all...
D 1. The mechanistic steps that are commonly seen in polar acidic reactions are: (check all that apply) Select all that apply intramolecular proton transfer elimination hydronium work-up deprotonation formation of an anionic tetrahedral intermediate nucleophilic addition protonation D 2. The dehydration of an alcohol to form an alkene is the reverse reaction of a Fischer esterification. False True D 3. Markovnikov's rule states: the major product forms from the most stable carbocation the major products forms from the least...
4. (15 Points) Pericyclic Reactions: The transformation below can be described as a pericyclic reaction followed by a polar-acidic mechanism, where the acid is not shown because it is picked up from...
4. (15 Points) Pericyclic Reactions: The transformation below can be described as a pericyclic reaction followed by a polar-acidic mechanism, where the acid is not shown because it is picked up from the environment. (a) Start by redrawing the starting material below, and show how the pericyclic reaction occurs with curved arrows. (b) Specify the type of pericyclic reaction it represents and the name reaction. (c) If you've done the pericyclic reaction correctly, your product will be an enol. From...
b. 3-methylbutene reacts with aqueous acid (H,0 True or False? c. The 3-membered bridge intermediate formed in the...
b. 3-methylbutene reacts with aqueous acid (H,0 True or False? c. The 3-membered bridge intermediate formed in the oxymercuration of alkenes has a large resonance contribution from ring-opened carbocation structures that lead to rearrangement reactions. True or False? d. The reaction of ozone (0,) with cyclohexene which is then treated with dimethysulfide or Zn dust as a reductant yields two carboxylic acid groups. True or False?
b. 3-methylbutene reacts with aqueous acid (H,0 True or False? c. The 3-membered bridge...
Polar molecules tend to be soluble in water. a) True b) False Which liquid is miscible...
Polar molecules tend to be soluble in water. a) True b) False Which liquid is miscible with water? a) carbon tetrachloride b) ethyl alcohol c) bromine d) oil Which anion will not precipitate silver ion? a) chloride b) nitrate c) bromide d) carbonate Which pH listed below is most acidic? a) 3 d) 7 c)9 d) 14 A hydrogen ion consists of a(n) a) electron. b) proton. c) neutron. d) proton and electron. Bronsted and Lowry defined an acid as...
Determine if each of the following statements is true or false 1 Larger atoms are better...
Determine if each of the following statements is true or false 1 Larger atoms are better nucleophiles due to polarizability. 2 The identity of the nucleophile affects the rate of an SN1 reaction. 3 SN2 reactions proceed via frontside attack. 4 Bimolecular reactions tend to be stereoselective. 5 SN2 reactions invert all stereocenters in a haloalkane. 6 Cl-, OH-, and...
a) which amino acid tested is most polar? b) look up the structure of the amino...
a) which amino acid tested is most polar?
b) look up the structure of the amino acids. explain why it
makes sense that the amino acid you listed is more polar than the
others?
c) what amino acids are in the fruit juice?
D. CHROMATOGRAPHY Chromatography is a general technique that is used to separate various materials. In this case, students can use the unique chemistry of the amino acid to determine its migration in a specific solvent. The solutions...
Total Marks 53 Q1. True / False 1. Tertiary hydrogen is more reactive than secondary hydrogen...
Total Marks 53 Q1. True / False 1. Tertiary hydrogen is more reactive than secondary hydrogen towards chlorination. 2. Tertiary alcohol is less reactive towards HX than secondary alcohol. 3. Loss of electron density by carbon is called reduction. 4. SN2 is a twostep reaction. 5. In SN2 the stereochemistry at C is not inverted. 6. Smaller activation energy makes the reaction slow. 7. Bulky substrate favors the rate of SN? reaction. 8. Neutral nucleophiles are more favorable for SN...
TRUE-FALSE QUESTIONS (2 points each) 22. Current chemical theory strongly suggests that all naturally occurring elements have been The most common (abundant) element in the universe is Common phy...
TRUE-FALSE QUESTIONS (2 points each) 22. Current chemical theory strongly suggests that all naturally occurring elements have been The most common (abundant) element in the universe is Common physical properties for a substance include color, melting point, boiling po 24. flammability and hardness. lonic bonds result from the sharing of one or more pairs of electrons. 26, The elements gold, silver and antimony all have chemical symbols which start with the 27 letter A Once a coordinate covalent bond is...
II. True/False. Write the word true or false by the following statements. (5) 1. A closed...
II. True/False. Write the word true or false by the following statements. (5) 1. A closed shell of re-electrons in an MO diagram of a cyclic compound indicates anti-aromaticity. 2. POCI, is a mild dehydrating agent for alcohols that follows an E2 mechanism. 3. For the re-system of benzene, there are six molecular orbitals with four different energy levels. 4. All meta directors in EAS reactions are strong electron withdrawing groups. 5. The catalyst in electrophilic aromatic substitution lowers the...
In polar acidic reactions, the pairing of the electrophile and nucleophile consists of: (choose 2 answers) Select all that apply weaker electrophile stronger nucleophile stronger electrophile weaker nucleophile Neutral nucleophiles are generally and nucleophiles. (Choose 2 words to best complete this statement.) Select all that apply negatively charged positively charged weaker stronger irreversible reversible Polar basic and polar acidic reactions have some similarities. Identify these similarities by checking all that apply Select all that apply Has an identifiable electrophile as...
D 1. The mechanistic steps that are commonly seen in polar acidic reactions are: (check all that apply) Select all that apply intramolecular proton transfer elimination hydronium work-up deprotonation formation of an anionic tetrahedral intermediate nucleophilic addition protonation D 2. The dehydration of an alcohol to form an alkene is the reverse reaction of a Fischer esterification. False True D 3. Markovnikov's rule states: the major product forms from the most stable carbocation the major products forms from the least...
4. (15 Points) Pericyclic Reactions: The transformation below can be described as a pericyclic reaction followed by a polar-acidic mechanism, where the acid is not shown because it is picked up from the environment. (a) Start by redrawing the starting material below, and show how the pericyclic reaction occurs with curved arrows. (b) Specify the type of pericyclic reaction it represents and the name reaction. (c) If you've done the pericyclic reaction correctly, your product will be an enol. From...
b. 3-methylbutene reacts with aqueous acid (H,0 True or False? c. The 3-membered bridge intermediate formed in the oxymercuration of alkenes has a large resonance contribution from ring-opened carbocation structures that lead to rearrangement reactions. True or False? d. The reaction of ozone (0,) with cyclohexene which is then treated with dimethysulfide or Zn dust as a reductant yields two carboxylic acid groups. True or False?
b. 3-methylbutene reacts with aqueous acid (H,0 True or False? c. The 3-membered bridge...
Polar molecules tend to be soluble in water. a) True b) False Which liquid is miscible with water? a) carbon tetrachloride b) ethyl alcohol c) bromine d) oil Which anion will not precipitate silver ion? a) chloride b) nitrate c) bromide d) carbonate Which pH listed below is most acidic? a) 3 d) 7 c)9 d) 14 A hydrogen ion consists of a(n) a) electron. b) proton. c) neutron. d) proton and electron. Bronsted and Lowry defined an acid as...
a) which amino acid tested is most polar?
b) look up the structure of the amino acids. explain why it
makes sense that the amino acid you listed is more polar than the
others?
c) what amino acids are in the fruit juice?
D. CHROMATOGRAPHY Chromatography is a general technique that is used to separate various materials. In this case, students can use the unique chemistry of the amino acid to determine its migration in a specific solvent. The solutions...
Total Marks 53 Q1. True / False 1. Tertiary hydrogen is more reactive than secondary hydrogen towards chlorination. 2. Tertiary alcohol is less reactive towards HX than secondary alcohol. 3. Loss of electron density by carbon is called reduction. 4. SN2 is a twostep reaction. 5. In SN2 the stereochemistry at C is not inverted. 6. Smaller activation energy makes the reaction slow. 7. Bulky substrate favors the rate of SN? reaction. 8. Neutral nucleophiles are more favorable for SN...
TRUE-FALSE QUESTIONS (2 points each) 22. Current chemical theory strongly suggests that all naturally occurring elements have been The most common (abundant) element in the universe is Common physical properties for a substance include color, melting point, boiling po 24. flammability and hardness. lonic bonds result from the sharing of one or more pairs of electrons. 26, The elements gold, silver and antimony all have chemical symbols which start with the 27 letter A Once a coordinate covalent bond is...
II. True/False. Write the word true or false by the following statements. (5) 1. A closed shell of re-electrons in an MO diagram of a cyclic compound indicates anti-aromaticity. 2. POCI, is a mild dehydrating agent for alcohols that follows an E2 mechanism. 3. For the re-system of benzene, there are six molecular orbitals with four different energy levels. 4. All meta directors in EAS reactions are strong electron withdrawing groups. 5. The catalyst in electrophilic aromatic substitution lowers the...
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