Which of the following correctly describes intermediates and/or transition states? ()
A. Transition states occur at minima on reaction coordinate diagrams.
Both transition states and intermediates occur at maxima on reaction coordinate diagrams.
C. An intermediate is always produced after the rate-determining step of a reaction mechanism.
D. Transition states have partially formed bonds whereas intermediates have fully formed bonds.
E. none of the above
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An () in which of the following results in a () in the rate of the chemical reaction? ()
A. temperature
B. concentration
C. collision frequency
D. energy of activation
E. fraction of collisions with proper orientation
How many carbons are in the planar double-bond system of 3-methylcyclopentene? ()
A. 0
B. 1
C. 2
D. 3
E. 4
Which of the following is capable of exhibiting cis-trans isomerism?()
A. 1-butene
B. 1-pentene
C. cyclohexene
D. ethene
E. 2-butene
Which of the following contributes to make ΔG° more negative?()
A. use of a catalyst
B. a more positive ΔH°
C. a more positive ΔS°
D. a larger rate constant
E. none of the above
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