valdez (vv689) – Homework #13 – Holcombe – (52460)
1
This
printout
should
have
15
questions.
Multiplechoice questions may continue on
the next column or page – find all choices
before answering.
001
10.0 points
For the reaction
2 NO(g) + 2 H
2
(g)
→
N
2
(g) + 2 H
2
O(g)
the following data were collected.
[NO(g)]
[H
2
(g)]
Rate, M/s
0.10
0.10
0.0050
0.10
0.20
0.010
0.10
0.30
0.015
0.20
0.10
0.020
0.20
0.20
0.040
What is the rate law for this reaction?
1.
rate =
k
[H
2
]
2
[NO]
2.
rate =
k
[H
2
] [NO]
3.
rate =
k
[H
2
]
[NO]
4.
rate =
k
[H
2
]
[NO]
2
5.
None of these
6.
rate =
k
[H
2
] [NO]
2
correct
Explanation:
002
10.0 points
A reaction involving reactants A and B is
found to occur in the onestep mechanism:
2 A + B
→
A
2
B
Write the rate law for this reaction, and
predict the effect of doubling the concentra
tion of either reactant on the overall reaction
rate.
1.
R
=
k
[A]
2
[B]; [A] doubled =
⇒
the rate
will increase fourfold; [B] doubled =
⇒
the
rate will increase fourfold.
2.
R
=
k
[A] [B]
2
; [A] doubled =
⇒
the rate
will increase fourfold; [B] doubled =
⇒
the
rate will double.
3.
R
=
k
[A]
2
[B]; [A] doubled =
⇒
the rate
will double;
[B] doubled =
⇒
the rate will
increase fourfold.
4.
R
=
k
[A] [B]
2
; [A] doubled =
⇒
the rate
will double;
[B] doubled =
⇒
the rate will
increase fourfold.
5.
R
=
k
[A]
2
[B]; [A] doubled =
⇒
the rate
will double;
[B] doubled =
⇒
the rate will
double.
6.
R
=
k
[A] [B]
2
; [A] doubled =
⇒
the rate
will double;
[B] doubled =
⇒
the rate will
double.
7.
R
=
k
[A] [B]
2
; [A] doubled =
⇒
the rate
will increase fourfold; [B] doubled =
⇒
the
rate will increase fourfold.
8.
R
=
k
[A]
2
[B]; [A] doubled =
⇒
the rate
will increase fourfold; [B] doubled =
⇒
the
rate will double.
correct
Explanation:
2 A + B
→
A
2
B
rate law = ?
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview.
Sign up
to
access the rest of the document.
 Spring '09
 McCord
 Chemical reaction, Rate equation, Valdez

Click to edit the document details