Kinetics - Extra Practice Problems Worksheet With Answer Key - General Chemistry Ii Page 5
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155
Given a Rate Law, How much will rate change with change in concentration
20. The reaction CHCl
(g) + Cl
(g) → CCl
(g) + HCl(g) has the following rate law: Rate = k[CHCl
][Cl
]. If the
3
2
4
3
2
concentration of CHCl
is increased by a factor of five while the concentration of Cl
is kept the same, the rate will
3
2
a.
double.
d.
increase by a factor of five.
b.
triple.
e.
decrease by a factor of one-fifth.
c.
stay the same.
2
21. The reaction 2NO(g) + O
(g) → 2NO
(g) has the following rate law: Rate = k[O
][NO]
. If the concentration of NO is
2
2
2
reduced by a factor of two, the rate will __________
a.
double.
d.
be reduced by one-half.
b.
quadruple.
e.
remain the same.
c.
be reduced by one-quarter.
22. The rate of a reaction is found to double when the concentration of one reactant is quadrupled. The order of the
reaction with respect to this reactant is __________
a.
first.
d.
one-half.
b.
second.
e.
third.
c.
one-quarter.
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