Kinetic Vs Thermo
Kinetic and Thermodynamic Reaction Condition Brandon Bullock 2/10/15
Objective The purpose of this experiment is to test kinetic theory by running several reactions and determine which product are formed under kinetic conditions and which products are formed under thermodynamic conditions. Kinetically controlled products have low transition states.
This makes it easy for the product to be formed at low temperatures. Thermodynamically controlled products for at higher temperatures due to this high activation energy barrier.
Data
Part
Melting Point
(theoretical)
Melting Point
(experimental)
Name of
Product
Comments
A1
167
162
Cyclohexanone semicarbazone White product
A2
202
202
Furfural
Off white
Semicarbazone Product
B1
167
166
Cyclohexanone semicarbazone White Product
B2
202
202
Furfural semicarbazone Off White product C1
202
193.7
Furfural
Off white
Semicarbazone product
C2
202
201
Furfural
Off white
Semicarbazone product
Mechanisms
Observations
A1
The solution bubbles and fizzes. The product is white and flaky A2 The furfural does not readily dissolve. The product was off white B1 The product was flaky and white B2 The product was flaky and white C1 The product was off white and nearly yellow C2 The product was off white and nearly yellow
Conclusion
The purpose of this experiment is to identify the differences between kinetic vs thermodynamic control in reactions. This was done by carrying out reactions with semicarbazide and either furfural or cyclohexanone. Part A1 of the experiment consisted of the reaction between cyclohexanone and
Semicarbazide. In A1, 1.7g of semicarbazide hydrochloride was dissolved in solution made up 3g of sodium bicarbonate in 150ml of
Objective The purpose of this experiment is to test kinetic theory by running several reactions and determine which product are formed under kinetic conditions and which products are formed under thermodynamic conditions. Kinetically controlled products have low transition states.
This makes it easy for the product to be formed at low temperatures. Thermodynamically controlled products for at higher temperatures due to this high activation energy barrier.
Data
Part
Melting Point
(theoretical)
Melting Point
(experimental)
Name of
Product
Comments
A1
167
162
Cyclohexanone semicarbazone White product
A2
202
202
Furfural
Off white
Semicarbazone Product
B1
167
166
Cyclohexanone semicarbazone White Product
B2
202
202
Furfural semicarbazone Off White product C1
202
193.7
Furfural
Off white
Semicarbazone product
C2
202
201
Furfural
Off white
Semicarbazone product
Mechanisms
Observations
A1
The solution bubbles and fizzes. The product is white and flaky A2 The furfural does not readily dissolve. The product was off white B1 The product was flaky and white B2 The product was flaky and white C1 The product was off white and nearly yellow C2 The product was off white and nearly yellow
Conclusion
The purpose of this experiment is to identify the differences between kinetic vs thermodynamic control in reactions. This was done by carrying out reactions with semicarbazide and either furfural or cyclohexanone. Part A1 of the experiment consisted of the reaction between cyclohexanone and
Semicarbazide. In A1, 1.7g of semicarbazide hydrochloride was dissolved in solution made up 3g of sodium bicarbonate in 150ml of