# Reaction Engineering

Topics: Minute, Time, International System of Units Pages: 2 (344 words) Published: April 20, 2012
1.
Determine the order of the reaction A --> 2B + C from the following data obtained for [A] as a function of time. time| [A]|
0 min| 0.80 M|
8 mins| 0.60 M|
24 mins| 0.35 M|
40 mins| 0.20 M|
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Use diferential and half life.

2. Balance the equation below and determine the rate expression using the given data. Find k with units. N2 + H2 ---> NH3 (all gaseous)
[N2] (mole/L)| [H2] (mole/L)| Initial Rate (mole/L /min)| 0.10| 0.10| 0.0021|
0.10| 0.20| 0.0084|
0.20| 0.40| 0.0672|
3.
The inversion of sucrose: C12H22O11 + H2O ---> 2C6H12O6, was studied at 250C. The concentration versus time data of the converted sucrose when the initial concentration of the sucrose was 2.00 moles per liter is tabulated.

time, min| 0| 40| 120| 200| 280| 360| 440| 520|
Concentration of converted sucrose, moles/L | 0.000| 0.251| 0.707| 1.107| 1.458| 1.767| 2.039| 2.277| Use the data to determine the order of the reaction with respect to the sucrose and the specific rate constant of the reaction.

4.
The following data were collected for the reaction SO2Cl2 --> SO2 + Cl2 at a certain temperature.

[SO2Cl2](mol/L), | Time(s) |
0.100             |     0 |
0.082             | 100 |
0.067              | 200 |
0.055             | 300 |
0.045            | 400 |
0.037             | 500 |
0.030             | 600 |
0.025              | 700 |
0.020             | 800 |

Make a graph of concentration versus time and determine the rate of the reaction at t=200 seconds and t=600 seconds.  Using the graph that you have prepared, determine the time required for the SO2Cl2 concentration to drop from 0.100 mol/L to 0.050 mol/L. How long does it take for the concentration to drop from 0.050 mol/L to 0.025 mol/L? What is the order of this reaction? (hint: How is the half-life related to concentration?)  Use...