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Section 4: Instantaneous Reaction Rates and Reaction Mechanisms

Instantaneous Reaction Rates and Reaction Mechanisms

1.
What quantity is defined by the change in concentration of a component in a chemical reaction divided by the change in time of the reaction?
A)specific rate constant
B)rate order
C)instantaneous rate
D)catalyst
2.
What is the instantaneous rate for a reaction that is second order in A and first order in B when [A] = 2M and [B] = 3M? The specific rate constant for the reaction is 0.1 M-2s-1.
A)12 M/s
B)1.2 M/s
C)0.12 M/s
D)0.012 M/s
3.
What is the slowest of the elementary steps in a complex reaction called?
A)mechanism
B)propagating step
C)rate-limiting step
D)fast step
4.
What are the units that generally express a reaction rate?
A)liters per mole per second
B)moles per liter per second
C)seconds per liter per mole
D)seconds per mole per liter
5.
What is the name given to a chemical produced in one elementary step and used up in a subsequent elementary step?
A)complex step
B)elementary step
C)reaction mechanism
D)intermediate
6.
What are the individual steps in a complex reaction known as?
A)complex steps
B)elementary steps
C)intermediate steps
D)rate-determining steps
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