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Worksheetskinetic & reaction mechanism - catalysis
Total questions: 15
Worksheet time: 30mins
The rate-determining step is
step of reaction in reaction mechanism which has the fastest rate among the other step of reaction
step of reaction in reaction mechanism which has the slowest rate among the other step of reaction
step of reaction in reaction mechanism which isn't the proper step in reaction mechanism
an unimportant step of reaction in reaction mechanism
Which one ARE TRUE about rate of reaction?
1.A reactant on chemical equation may have no effect on reaction rates
2.A substance that is not a reactant may involve in reaction and affect reaction rate
3.In reaction mechanism, the overall rate of reaction is assumed to depends on the slowest step of reaction
1, 2, and 3
1 and 2
2 and 3
1 and 3
Which one AREN'T TRUE about reaction mechanism?
1.It's used to deduce rate equation of a reaction without conducting experiment first
2.We can possibly predict the reaction mechanism of a reaction as long as it's consistent with rate equation of that reaction
3.Rate equation of reaction are derived first from reaction mechanism before experiment is performed
1, 2, and 3
1 and 2
1 and 3
2 and 3
substance or species that doesn't appear in chemical equation, but is proposed to form in some reaction step and then is consumed at another reaction step at reaction mechanism, is called
product
substrate
catalyst
intermediate
substance or species that doesn't appear in chemical equation but exist in reaction and involve in the rate of reaction by being consumed at early step of reaction before is finally formed again at the later step of reaction, is called
Catalyst
Substance
Product
Intermediate
If there is only single substance (atom, molecule, or ion) involved in the rate-determining step, that reaction is said to be
unimolecular
bimolecular
polimolecular
trimolecular
If there is two substances (atom, molecule, or ion) involved in the rate-determining step, that reaction is said to be
unimolecular
bimolecular
trimolecular
polimolecular
Reaction :
2A + B → C + D
is proposed to have reaction mechanism shown below :
A + B → AB + D (slow)
A + AB → C (fast)
the consistent rate equation with the reaction mechanism above is ____
rate = k [A]2 [B]
rate = k [A]2 [B]2
rate = k [A] [B]
rate = k [A] [B]2
The decomposition of nitrous oxide :
2N2O(g) → 2N2(g) + O2(g)
is believed to occur by two-step mechanism
N2O(g) → N2(g) + O(g) (slow)
N2O(g) + O(g) → N2(g) + O2(g) (fast)
the consistent rate equation based on the mechanism above is ____
rate = k [N2O]2
rate = k [N2O]
rate = k [N2O]2 [N2]
rate = k
A possible mechanism for reaction :
A + 2B → C + D
is shown below :
2B → E (slow)
A + E → C + D (fast)
which of the following diagram represents reaction pathway diagram for this reaction mechanism?
A possible mechanism for reaction :
2A + B → C + D + E
is shown below :
2A → E + F (fast)
B + F → C + D (slow)
which of the following diagram represents reaction pathway diagram for this reaction mechanism?
A possible mechanism for reaction :
2A + B → C + D
is shown below :
A + B→ E (slow)
A + E → C + D (fast)
which one is intermediate in this reaction?
A
B
C
D
E
A possible mechanism for reaction :
2A + 2B → C + 2D
is shown below :
A + B→ D (fast)
A + F → C + E (slow)
B + E → D + F (fast)
which one acts as catalyst in this reaction?
F
E
D
C
B
Which set of reaction mechanism is likely to have a reaction pathway diagram shown above?
A + B → C (slow)
C + A → F (fast)
A + B → C (fast)
C + B → D + E (slow)
E → F (fast)
A + B → C (fast)
C + A → F (slow)
A + B → C (fast)
C + B → D + E (fast)
E → F (slow)
the reaction between gaseous iodine monochloride, ICl, and gaseous hydrogen :
H2(g) + 2ICl (g) → I2(g) + 2HCl (g)
has a rate equation : k [ICl] [H2]
Which one ARE TRUE based on information above?
unimolecular reaction probably take places in rate-determining step
H2 molecules only involve in fast step reaction
It's likely that only 1 molecules of ICl involve in rate-determining step
The reaction doesn't depends on the concentration of H2
