GENERAL CHEMISTRY II EXAM WITH
100% CORRECT ANSWERS { GRADED
A+}
__________ are used in automotive catalytic converters.
Homogeneous catalysts
Noble gases
Nonmetal oxides
Enzymes
Heterogeneous catalysts - ✔✔Heterogeneous catalysts
The rate limiting step in a reaction is the slowest step in the reaction sequence.
, True or False - ✔✔True
How many half-lives are required for the concentration of reactant to decrease to
12.5% of its original value?
2.75
1.75
1
2
3 - ✔✔3
A mechanism for a naturally occurring reaction that destroys ozone is:
Step 1: O3(g) + HO(g) → HO2(g) + O2(g) Step 2: HO2(g) + O(g) → HO(g) +
O2(g)
Which species is a catalyst?
100% CORRECT ANSWERS { GRADED
A+}
__________ are used in automotive catalytic converters.
Homogeneous catalysts
Noble gases
Nonmetal oxides
Enzymes
Heterogeneous catalysts - ✔✔Heterogeneous catalysts
The rate limiting step in a reaction is the slowest step in the reaction sequence.
, True or False - ✔✔True
How many half-lives are required for the concentration of reactant to decrease to
12.5% of its original value?
2.75
1.75
1
2
3 - ✔✔3
A mechanism for a naturally occurring reaction that destroys ozone is:
Step 1: O3(g) + HO(g) → HO2(g) + O2(g) Step 2: HO2(g) + O(g) → HO(g) +
O2(g)
Which species is a catalyst?
