Welcome to the Quiz!
This quiz contains 6 questions from a mix of 1 subtopics.
The step in a multi-step reaction is called the rate-determining step.
|
Which step in a multi-step reaction is the slowest?
the rate-determining step
all steps have the same rate
the first step
the last step
|
The two-step mechanism for the hydrolysis of a tertiary halogenoalkane is shown below:
Step 1: (CH3)3CBr ➔ (CH3)3C+ + Br- slow
Step 2: (CH3)3C+ + OH- ➔ (CH3)3COH fast
Which rate equation is consistent with this reaction mechanism?
rate = k[(CH3)3C+]
rate = k[(CH3)3C+][OH-]
rate = k[(CH3)3CBr][OH-]
rate = k[(CH3)3CBr]
|
What is an intermediate in a reaction mechanism?
a species that determines the rate equation
a product
a reactant
a species formed in one step and used up in another step
|
The two-step mechanism for the hydrolysis of a tertiary halogenoalkane is shown below:
Step 1: (CH3)3CBr ➔ (CH3)3C+ + Br- slow
Step 2: (CH3)3C+ + OH- ➔ (CH3)3COH fast
What statement is true about the (CH3)3C+ species?
it is a catalyst
it is a reactant
it is a product
it is an intermediate
|
The three-step mechanism for the decomposition of dinitrogen pentoxide is shown below:
Step 1: N2O5(g) ➔ NO2(g) + NO3(g)
Step 2: NO2(g) + NO3(g) ➔ NO(g) + NO2(g) + O2(g)
Step 3: NO(g) + NO3(g) ➔ 2NO2(g)
The rate equation for the following reaction is: rate = k[N2O5].
Which step is the rate-determining step?
step 3
step 1
step 2
|