Quiz#1
CHEM-111 ( Quiz
# 1)
NAME
: _______________________________ ID # ______________Serial No.______
What is the correct rate-law expression?
NH4+ + NO2- --> N2 + 2H2O
Expt. |
[NH4+]initial |
[NO2-]initial |
Initial
Rate of Reaction |
1 |
0.10
M |
0.20
M |
0.020
M/s |
2 |
0.15
M |
0.20 M |
0.030
M/s |
3 |
0.10
M |
0.10
M |
0.005
M/s |
Q 2.
Consider the decomposition of dinitrogen pentoxide:
N2O5(g)
--> 2NO2(g) + 1/2 O2(g).
The
experimentally derived rate-law expression is rate = k[N2O5].
At
45°C, the half-life of the reaction is 23.1 minutes. Calculate the rate
constant, k.