Kinetics - Extra Practice Problems Worksheet With Answer Key - General Chemistry Ii Page 7
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157
Actual Rate Law from a Table of Concentration/Rate Data
28. Given the following data, determine the rate law for the reaction
+
–
NH
(aq) + NO
(aq) → N
(g) + 2H
O()
4
2
2
2
+
–
Experiment
[NH
] (M)
[NO
] (M)
Rate (M/s)
4
2
–3
1
0.2500
0.2500
1.25 × 10
–3
2
0.5000
0.2500
2.50 × 10
–4
3
0.2500
0.1250
6.25 × 10
+
–
+
1/2
–
2
a.
k[NH
][NO
]
d.
k[NH
]
[NO
]
4
2
4
2
+
2
–
+
–
2
b.
k[NH
]
[NO
]
e.
k[NH
][NO
]
4
2
4
2
+
–
1/2
c.
k[NH
][NO
]
4
2
29. Given the following data, determine the rate law for the reaction
2NO(g) + Cl
(g) → 2NOCl(g)
2
Experiment
[NO] (M)
[Cl
] (M)
Rate (M/s)
2
–4
1
0.0300
0.0100
3.4 × 10
–5
2
0.0150
0.0100
8.5 × 10
–4
3
0.0150
0.0400
3.4 × 10
2
2
a.
Rate = k[NO][Cl
]
d.
Rate = k[NO]
[Cl
]
2
2
2
1/2
b.
Rate = k[NO][Cl
]
e.
Rate = k[NO][Cl
]
2
2
2
c.
Rate = k[NO]
[Cl
]
2
30. What is the rate law for the reaction 2A + 2B + 2C à products
Initial [A]
Initial [B]
Initial [C]
rate
0.273
0.763
0.400
3.0
0.819
0.763
0.400
9.0
0.273
1.526
0.400
12.0
0.273
0.763
0.800
6.0
a.
rate = k[A][B][C]
2
b.
rate = k[A][B]
[C]
3
4
2
c.
rate = k[A]
[B]
[C]
2
2
2
d.
rate = k[A]
[B]
[C]
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