Question 1

Identify the nucleophiles and electrophiles.
-OH,BH3,H2O,+CH3,NH3,Br-

Accepted Answer

nucleophil

Question 2

Provide the systematic name of the compound shown below.Make sure to include the E or Z designator if necessary.

Accepted Answer

(Z)-4-fluo

Question 3

Consider the reaction coordinate diagram shown.What is the rate-determining step in the conversion of A to G?

Accepted Answer

Step 2 ( C

Question 4

Consider the one-step conversion of F to G.Given that the reaction is endergonic by 5 kcal/mol and that the energy difference between G and the transition state for the process is 15 kcal/mol,sketch a reaction-energy profile for this reaction.Make sure to show how the given energy differences are consistent with your sketch.

Accepted Answer

The answer of Consider the one-step conversion of F to...

Question 5

Consider the reaction coordinate diagram shown.Which step has the greatest activation energy?

Accepted Answer

A) A going to C 
B) C going to E 
C) E going to G 
D) E going to C 
E) C going to A 
A) A going to C 
B) C going to E 
C) E going to G 
D) E going to C 
E) C going to A

Question 6

Consider the conversion of C to D via a one-step mechanism.The activation energy of this conversion is 3 kcal/mol.The energy difference between D and the transition state of the reaction is 7 kcal/mol.Estimate ΔH° for the reaction C → D.

Accepted Answer

The answer of Consider the conversion of C to D...

Question 7

The Arrhenius equation models how the rate constant k

Accepted Answer

A) increases as both Ea and T increase. 
B) increases most when Ea increases and T decreases. 
C) increases most when Ea decreases and T increases. 
D) increases as both Ea and T decrease. 
E) increases as reactant concentrations increase. 
A) increases as both Ea and T increase. 
B) increases most when Ea increases and T decreases. 
C) increases most when Ea decreases and T increases. 
D) increases as both Ea and T decrease. 
E) increases as reactant concentrations increase.

Question 8

Consider the reaction coordinate diagram shown.Which step has the greatest rate constant in the forward direction?

Accepted Answer

Step 3 (E

Question 9

What is the activation energy for the reaction B → A in the following diagram?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 10

An increase in which of the following will occur if the reaction temperature is increased? I.Energy of activation
II)Collision frequency
III)Fraction of collisions with sufficient energy

Accepted Answer

A) I and II 
B) I and III 
C) II and III 
D) I,II,and III 
E) I 
A) I and II 
B) I and III 
C) II and III 
D) I,II,and III 
E) I

Question 11

Based on the following energy diagram,which compound,A or C,is formed faster from B? Which is more stable,A or C? Explain.

Accepted Answer

A is formed faster since the p

Question 12

Which of the following correctly describes the reaction shown?

Accepted Answer

A) ΔH° >0 and ΔS° >0 B) ΔH° >0 and ΔS 0 D) ΔH° <0 and ΔS <0 E) ΔH° = ΔS = 0 A) ΔH° >0 and ΔS° >0 B) ΔH° >0 and ΔS 0 D) ΔH° <0 and ΔS <0 E) ΔH° = ΔS = 0

Question 13

Draw the structure of propyl vinyl ether.

Accepted Answer

The answer of Draw the structure of propyl vinyl ether....

Question 14

Indicate the electrophile and nucleophile in the chemical reaction?

Accepted Answer

The answer of Indicate the electrophile and nucleophile in the...

Question 15

How many carbons are in the planar double-bond system of 3-methylcyclopentene?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 4 
A) 0 
B) 1 
C) 2 
D) 3 
E) 4

Question 16

Calculate the enthalpy for the following reaction.     H-Cl,103 kcal/mole
CH3CH2-H,101 kcal/mole
CH3CH2-Cl,85 kcal/mole

Accepted Answer

Question 17

Name the structure.

Accepted Answer

A) cis-4,5-dimethyl-4-hepten-1-ol 
B) trans-3,4-dimethyl-3-hepten-7-ol 
C) cis-3,4-dimethyl-3-hepten-7-ol 
D) trans-4,5-dimethyl-4-hepten-1-ol 
E) trans-4,5-dimethyl-4-heptenol 
A) cis-4,5-dimethyl-4-hepten-1-ol 
B) trans-3,4-dimethyl-3-hepten-7-ol 
C) cis-3,4-dimethyl-3-hepten-7-ol 
D) trans-4,5-dimethyl-4-hepten-1-ol 
E) trans-4,5-dimethyl-4-heptenol

Question 18

Draw vinyl bromide.

Accepted Answer

The answer of Draw vinyl bromide....

Question 19

A carbocation is

Accepted Answer

A) a carbon with a negative charge 
B) a carbon with a positive charge 
C) a carbon with an unpaired electron 
D) a carbon with complete octet 
E) a carbon with five hydrogens 
A) a carbon with a negative charge 
B) a carbon with a positive charge 
C) a carbon with an unpaired electron 
D) a carbon with complete octet 
E) a carbon with five hydrogens

Question 20

Which of the following statements about propene,CH3CH   CH2,is correct?

Accepted Answer

A) All nine atoms lie in the same plane. 
B) The compound has a cis and trans isomer. 
C) It generally acts as a Lewis acid. 
D) There is a total of eight sigma bonds. 
E) All the carbon atoms are sp2 hybridized. 
A) All nine atoms lie in the same plane. 
B) The compound has a cis and trans isomer. 
C) It generally acts as a Lewis acid. 
D) There is a total of eight sigma bonds. 
E) All the carbon atoms are sp2 hybridized.

Exam 5: Alkenes: Structure,nomenclature,and an Introduction to Reactivity - Thermodynamics and Kinetics

Identify the nucleophiles and electrophiles. -OH,BH3,H2O,+CH3,NH3,Br-

Provide the systematic name of the compound shown below.Make sure to include the E or Z designator if necessary.

Consider the reaction coordinate diagram shown.What is the rate-determining step in the conversion of A to G?

Consider the reaction coordinate diagram shown.Which step has the greatest activation energy?

Consider the conversion of C to D via a one-step mechanism.The activation energy of this conversion is 3 kcal/mol.The energy difference between D and the transition state of the reaction is 7 kcal/mol.Estimate ΔH° for the reaction C → D.

The Arrhenius equation models how the rate constant k

Consider the reaction coordinate diagram shown.Which step has the greatest rate constant in the forward direction?

What is the activation energy for the reaction B → A in the following diagram?

An increase in which of the following will occur if the reaction temperature is increased? I.Energy of activation II)Collision frequency III)Fraction of collisions with sufficient energy

Based on the following energy diagram,which compound,A or C,is formed faster from B? Which is more stable,A or C? Explain.

Which of the following correctly describes the reaction shown?

Draw the structure of propyl vinyl ether.

Indicate the electrophile and nucleophile in the chemical reaction?

How many carbons are in the planar double-bond system of 3-methylcyclopentene?

Calculate the enthalpy for the following reaction. H-Cl,103 kcal/mole CH3CH2-H,101 kcal/mole CH3CH2-Cl,85 kcal/mole

Name the structure.

Draw vinyl bromide.

A carbocation is

Which of the following statements about propene,CH3CH CH2,is correct?

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds: Nomenclature, physical Properties, and Structure

Isomers: the Arrangement of Atoms in Space

The Reactions of Alkenes - the Stereochemistry of Addition Reactions

The Reactions of Alkynes - Introduction to Multistep Synthesis

Delocalized Electrons: Their Effect on Stability, pka, and the Products of a Reaction - Aromaticity and Electronic Effects: an Introduction to the Reactions of Benzene

Substitution and Elimination Reactions of Alkyl Halides

Reactions of Alcohols, ethers, epoxides, amines and Sulfur-Containing Compounds

Organometallic Compounds

Radicals

Mass Spectrometry,infrared Spectroscopy,and Uvvis Spectroscopy

Nmr Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions of Aldehydes and Ketones

Reactions at the Α-Carbon

Reactions of Benzene and Substituted Benzenes

More About Amines - Reactions of Heterocylic Compounds

The Organic Chemistry of Carbohydrates

Amino Acids,peptides,and Proteins

Catalysis in Organic Reactions and in Enzymatic Reactions

The Organic Chemistry of the Coenzymes, compounds Derived From Vitamins

The Organic Chemistry of the Metabolic Pathways

The Organic Chemistry of Lipids

The Chemistry of the Nucleic Acids

Synthetic Polymers

Pericyclic Reactions

Filters

Identify the nucleophiles and electrophiles. ^-OH,BH₃,H₂O,⁺CH₃,NH₃,Br^-

Calculate the enthalpy for the following reaction. H-Cl,103 kcal/mole CH₃CH₂-H,101 kcal/mole CH₃CH₂-Cl,85 kcal/mole

Which of the following statements about propene,CH₃CH CH₂,is correct?