Lab06

CHEMISTRY 1 MAY 2011 LAB REPORT

Aim: 1) To particularize factors affecting reaction rate.
2) To calculate the rate constant for the reaction.
mapping: Please see laboratory manual page 47 to 49

Results:
A) Nature of the reactants
1) HCl,H2SO4,H3PO4,CH3
2) Magnesium, zinc, copper.

B) Temperature of the Reaction|

| | Time (s)| Temperature (oC)|
| | 6.58| 10.00|
| | 5.03| 20.00|
| | 1.04| 50.00|

| |
| | | | | |
| | | | | | -6.4516129|
| | | | | | 52.4516129|
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| Estimate at 15 second| -44.32| Celcius| | |

C) Presence of catalyst
1) MnO2 increases the rate of O2 gas evolution.
2) 2H2+2O2 2H2O2


Concentration of reactants| | | |
| | | | | | |
| [HCl]| mol HCl| Mass Mg| counterspy Mg| Mol HCl/Mol Mg| Time (s)|
| 6.0000| 0.0060| 0.0300| 0.0012| 4.8620| 39.00|
| 4.0000| 0.0040| 0.0200| 0.0008| 4.8620| 57.



00|
| 3.0000| 0.0030| 0.0100| 0.0004| 7.2930| 81.00|
| 1.0000| 0.0010| 0.0500| 0.0021| 0.4862| one hundred eighty0.00|

Determination of Rate Law| | | |
| miscellany| Time (s)| Relative Rate (1000/t)| [I-]| [BrO3-]| [H+]|
| 1| 276| 3.62| 0.002| 0.008| 0.02|
| 2| 180| 5.56| 0.004| 0.008| 0.02|
| 3| 162| 6.17| 0.002| 0.016| 0.02|
| 4| 81| 12.35| 0.002| 0.008| 0.04|

Values for m, n, and p:| | |
| m| 0.62| 1|
| n| 0.77| 1|
| p| 1.77| 2|

calculation:
Mixture 1= (0.002) (0.008) (0.02) =3.2 × 10-7
Mixture 2= (0.004) (0.008) (0.02) = 6.4 × 10-7
Mixture 3= (0.002) (0.016) (0.02) = 6.4 × 10-7
Mixture 4= (0.002) (0.008) (0.04) = 6.4 × 10-7

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