Consider the reaction
A + B → Products
From the following data obtained at a certain...
Consider the reaction
A + B → Products
From the following data obtained at a certain temperature,
determine the order of the reaction. Enter the order with respect
to A, the order with respect to B, and the overall reaction
order.
For the reaction
A + B + C → D
The following data were obtained at constant temperature:
Trial
Initial [A] (mol/L)
Initial [B] (mol/L)
Initial [C] (mol/L)
Initial Rate (mol/L . s)
1
0.2790
0.1670
0.0334
1.190
2
0.5580
0.1670
0.0334
2.381
3
0.5580
0.3340
0.0334
9.524
4
0.2790
0.1670
0.0668
1.190
1. What is the order with respect to each
reactant? (Enter the order for A as Answer 1, that for B as Answer
2, and that for...
The following data were obtained for the concentration vs. time
for a certain chemical reaction. Values were measured at 1.0 s
intervals, beginning at 0.00 and ending at 20.0 s. Concentrations
in mM are:
10.00, 6.91, 4.98, 4.32, 3.55, 3.21, 2.61
2.50, 2.22, 1.91, 1.80, 1.65, 1.52, 1.36
1.42, 1.23, 1.20, 1.13, 1.09, 1.00, 0.92
a) Plot concentration, c, vs. time, t, ln
c vs. t, and 1/c vs. t.
b) Decide whether the data best fit zero-order, first-order or...
The following data were obtained from a batch experiment for the
reaction where A is converted to B.
1)Determine the order of the
reaction
Time (min)
0
10
20
40
60
80 100
A (mg/lit)
100
74
55
30
17
9 5
2) Consider a first order reaction taking place in a batch
reactor.
Develop an expression for the
detention time in the reactor.
Consider the table of data collected for the reaction A → Products. Determine the magnitude (value) of the reaction rate constant by graphing the data appropriately.
Consider this initial-rate data at a certain temperature for the
reaction described by
:
OH-(aq)
OCl-(aq) + I- (aq) --------------> OI-(aq) + Cl-(aq)
Trial [OCl-]0
(M)
[I-]0
(M)
[OH-]0
(M)
Initial rated (M/s)
1
0.00161
0.00161
0.530
0.000335
2
0.00161
0.00301
0.530
0.000626
3
0.00279 0.00161
0.710
0.000433
4
0.00161
0.00301
0.880
0.000377
Determine the tate law and the value of the rate constant for
this reaction.
(b) The following data was obtained from a study of an ecosystem
in which 10 different species were randomly identified and their
heights measured. As a Research Assistant for Plant Ecology
Laboratory, determine:
(i) Mean height of all species combined
(ii) Variance as a measure of variability in plant height
(iii) Standard deviation
SPECIES HEIGHT(cm)
1. Beech (Fagus spp.) 300 cm
2.Hackberry (Celtis occidentalis) 90cm
3. Southern red oak (Quercus faclcata) 80 cm
4. Dogwood (Comus florid) 600 cm
5....
Consider the data in the following table, obtained from a
cohort study conducted by Iso and colleagues [Isa H, Date C,
Yamamoto A, et al. Smoking cessation and mortality from
cardiovascular disease among Japanese men and women. The JACC
study. Am J Epidmeiol. 2005;161(2):170-179.].
Total Cardiovascular Disease According to Smoking
Status
Disease
Current Smoker
Cases
Person-years
Yes
882
—
220,965
No
673
—
189,254
Calculate the rate
ratio and corresponding 95% confidence interval for these data.
Express your answer to...
The following set of data was obtained by the method of initial
rates for the reaction: 2NO(g) + O2 (g) ---->
2NO2(g)
Experiment #
[NO], M
[O2], M
Initial Rate, M/s
1
0.0126
0.0125
1.41 x 10^-2
2
0.0252
0.0250
1.13 x 10^-1
3
0.0252
0.0125
5.64 x 10^-2
a) What is the rate law for the reaction?
b) If you triple the concentration of both reactants, what will
happen to the rate?
c) What is the value of the...
For the reaction
A(g) + B(g) + C(g) "
D(g) the following data were
obtained at 25°C.
Exp’t
Initial [A] (M)
Initial [B] (M)
Initial [C] (M)
Initial Rate (mole∙L–1s–1)
1
0.0500
0.0500
0.0100
6.25 x 10–3
2
0.1000
0.0500
0.0100
1.25 x 10–2
3
0.1000
0.1000
0.0100
5.00 x 10–2
4
0.0500
0.0500
0.0200
6.25 x 10–3
5
0.2000
0.3000
0.3000
?????
Which choice gives correct kinetics information for this
reaction? Which choice is closest to the rate
constant for this...
Consider the following reaction A(g) + B(g) --> AB(l) The
table shows the data for [A] vs time.
Tell me the order of the reaction with respect to A. Provide a
plot(graph) that supports your answer.
Give me the value of the rate constant with the appropriate
units.
time (sec) [A], M
0 100
10 82
20 68
30 55
40 43
50 35
60 27