## CHM 112 Section 1

Homework Assignment #3
##### Due January 30, 2006 by 8:05 a.m.

Practice (not to be turned in): 13.27, 13.30, 13.32, 13.33, 13.34, 13.38, 13.40, 13.41, 13.47, 13.48

Consider the reaction

A(g) products

The following data was found:
 data set 0 time (s) [A] 0.00 0.100 0.10 0.086 0.20 0.074 0.30 0.064 0.40 0.055 0.50 0.047 0.60 0.041 0.70 0.035 0.80 0.030 0.90 0.026 1.00 0.022

 data set 1 time (s) [A] 0.000 0.100 0.005 0.090 0.010 0.080 0.015 0.072 0.020 0.064 0.025 0.058 0.030 0.052 0.035 0.046 0.040 0.041 0.045 0.037 0.050 0.033

 data set 2 time (s) [A] 0.0000 0.100 0.0010 0.090 0.0020 0.081 0.0030 0.072 0.0040 0.065 0.0050 0.058 0.0060 0.052 0.0070 0.047 0.0080 0.042 0.0090 0.038 0.0100 0.034

 data set 3 time (s) [A] 0.00 0.100 0.10 0.088 0.20 0.078 0.30 0.070 0.40 0.064 0.50 0.059 0.60 0.054 0.70 0.051 0.80 0.047 0.90 0.044 1.00 0.042

 data set 4 time (s) [A] 0.000 0.100 0.010 0.082 0.020 0.069 0.030 0.060 0.040 0.053 0.050 0.048 0.060 0.043 0.070 0.039 0.080 0.036 0.090 0.033 0.100 0.031

 data set 5 time (s) [A] 0.0 0.100 1.0 0.081 2.0 0.068 3.0 0.058 4.0 0.051 5.0 0.045 6.0 0.041 7.0 0.037 8.0 0.034 9.0 0.032 10.0 0.029

 data set 6 time (s) [A] 0.0000 0.100 0.0025 0.092 0.0050 0.084 0.0075 0.076 0.0100 0.068 0.0125 0.060 0.0150 0.052 0.0175 0.044 0.0200 0.036 0.0225 0.028 0.0250 0.020

 data set 7 time (s) [A] 0.000 0.100 0.025 0.092 0.050 0.083 0.075 0.075 0.100 0.066 0.125 0.058 0.150 0.049 0.175 0.041 0.200 0.032 0.225 0.024 0.250 0.015

 data set 8 time (s) [A] 0.00 0.100 0.50 0.092 1.00 0.084 1.50 0.076 2.00 0.068 2.50 0.060 3.00 0.052 3.50 0.044 4.00 0.036 4.50 0.028 5.00 0.020

 data set 9 time (s) [A] 0.00000 0.100 0.00025 0.089 0.00050 0.079 0.00075 0.070 0.00100 0.062 0.00125 0.055 0.00150 0.049 0.00175 0.043 0.00200 0.038 0.00225 0.034 0.00250 0.030

Choose the data set corresponding the to last digit in your Student ID Number.

Plot the data as:
a) a zero order reaction
b) a first order reaction
c) a second order reaction

Based on these plots, determine the order of reaction and the rate constant, including units. Use a full, clean sheet of graph paper for each plot (spread sheets plots are NOT acceptable). Be sure that the axes are labeled and that the data uses the entire plotted area of your graph.

Turn in the following:

Name
Student ID Number
Staple or paper clip the three plots together and be sure to indicate your conclusion concerning the order of reaction and the value of the rate constant