A) Heterolysis involves unequal sharing of bonding electrons by atoms.
B) Homolysis generates uncharged reactive intermediates with unpaired electrons.
C) Homolysis require energy but heterolysis does not require energy.
D) Heterolysis generates charged intermediates.
F) B) and C)
Correct Answer
verified
Correct Answer
verified
A) One ? bond breaks and another forms at a different carbon atom.
B) One ? bond breaks and another forms at the same carbon atom.
C) Substitution reactions involve ? bonds.
D) Substitution reactions involve ? bonds.
F) A) and C)
Correct Answer
verified
Correct Answer
verified
A) Bond dissociation energies decrease down a column of the periodic table.
B) Bond dissociation energies increase down a column of the periodic table.
C) When DH° is positive, more energy is released in forming bonds than is needed to break bonds.
D) When DH° is negative, more energy is needed to break bonds than is released in forming bonds.
F) None of the above
Correct Answer
verified
Correct Answer
verified
A) DH° determines the height of the energy barrier.
B) The larger the activation energy, the slower the reaction.
C) The lower the activation energy, the faster the reaction.
D) Two reactions can have identical values for DH° but very different Ea values.
F) A) and B)
Correct Answer
verified
Correct Answer
verified
A) Enzymes shift the equilibrium to favor the product.
B) Enzymes lower the transition state for the rate-determining step.
C) Enzymes decrease the equilibrium constant.
D) Enzymes increase the activation energy for a reaction.
F) A) and B)
Correct Answer
verified
Correct Answer
verified
A) Equilibrium favors the products when they are more stable than the starting material of a reaction.
B) Equilibrium favors the reactants when the energy of the product is lower than the energy of the reactants.
C) Equilibrium favors the products when the energy of the products is higher than the energy of the reactants.
D) Equilibrium favors the products when they are less stable than the starting material of a reaction.
F) A) and B)
Correct Answer
verified
Correct Answer
verified
A) Keq < 1
B) Cannot be determined from the information provided
C) Keq > 1
D) Keq = 1
F) A) and C)
Correct Answer
verified
C
Correct Answer
verified
A) 1
B) 2
C) 4
D) 3
F) B) and D)
Correct Answer
verified
Correct Answer
verified
A) B
B) C
C) A
E) A) and C)
Correct Answer
verified
Correct Answer
verified
A) The bond dissociation energy for bond formation is always negative.
B) The bond dissociation energy for bond breaking is always negative.
C) Bond making is exothermic.
D) Bond breaking is endothermic.
F) C) and D)
Correct Answer
verified
Correct Answer
verified
A) +9 kcal
B) +7 kcal
C) None of these
D) +3 Kcal
F) B) and C)
Correct Answer
verified
Correct Answer
verified
A) The size ofKeq tells about the position of equilibrium.
B) WhenKeq > 1, the equilibrium favors the reactants.
C) For a reaction to be useful, the equilibrium must favor the reactants.
D) WhenKeq < 1, the equilibrium favors the products.
F) A) and D)
Correct Answer
verified
Correct Answer
verified
A) None of these are correct.
B) Heterolytic bond cleavage
C) All of the above
D) Homolytic bond cleavage
F) All of the above
Correct Answer
verified
B
Correct Answer
verified
A) +7 kcal
B) None of these
C) +3 kcal
D) +9 Kcal
F) A) and C)
Correct Answer
verified
Correct Answer
verified
A) Rate = k [acetyl chloride] [?OCH3]
B) Rate = k [acetyl chloride]
C) Rate = k [?OCH3]
D) Rate = k [acetyl chloride] [?OCH3]2
F) None of the above
Correct Answer
verified
A
Correct Answer
verified
A) Rate =k[(CH3) 2CH]+[H2O]
B) Rate =k[(CH3) 2CHCl]
C) Rate =k[(CH3) 2CHCl][H2O]
D) Rate =k[(CH3) 2CH]+
F) B) and D)
Correct Answer
verified
Correct Answer
verified
Showing 1 - 16 of 16
Related Exams