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Title: Types of Reactions Lab
Description: Formal lab detailing synthesis, decomposition, single displacement, and double displacement reactions - outlining the purpose, materials/apparatus, general form of each equation, whether the reactions were endo- or exothermic, and the definition of a catalyst. Notes provided by an International Baccalaureate student.
Description: Formal lab detailing synthesis, decomposition, single displacement, and double displacement reactions - outlining the purpose, materials/apparatus, general form of each equation, whether the reactions were endo- or exothermic, and the definition of a catalyst. Notes provided by an International Baccalaureate student.
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Types of Chemical Reactions
Jonathan Lin
SNC2DE 03
Mr
...
The four basic chemical reactions are as follows:
Type of Reaction
General Reaction Pattern
Synthesis
A + B → AB
Decomposition
AB → A + B
Single Displacement
A + BC → B + AC
Double Displacement
AB + CD → AD + CB
Materials/Apparatus:
Small beaker
Scoopula
Graduated Cylinder
Safety Goggles
Hot plate
Matches
Test tube rack
Copper (II) Chloride
Tongs
Aluminum
Bunsen Burner
Sodium Sulphate
Flint lighter
Barium Chloride
Test tube
Copper Wire
Test tube clamp
Hydrogen Peroxide
Wooden splint
Manganese Dioxide
Procedure:
Procedure:
Station #1:
Procedure:
Station #2:
Procedure:
Station #3:
Procedure:
Station #4:
Discussion Questions:
1
...
anganese dioxide was used at station #4 and acted as a catalyst
...
At Station #4, the manganese dioxide acted as a catalyst for the decomposition of hydrogen
peroxide to oxygen and water by lowering the activation energy and thus speeding up the rate of decomposition (see
Fig
...
At the same temperature, a catalyst permits more reactant molecules to have enough kinetic energy to react
compared to an uncatalysed reaction; this allows more collisions to occur and hence speed up the rate of a reaction
...
The manganese dioxide (MnO
) catalyst was not chemically altered and could thus be
2
effectively reused after being filtered
...
1
3
...
An endothermic reaction is a chemical reaction that requires the absorption of energy, often in the form of heat, in
order to proceed
...
An exothermic reaction is a chemical reaction that releases energy in the
form of heat or light
...
The reaction between barium chloride and sodium sulphate at Station #2 was
unclear; we were unable to determine if an input of energy was required in order for the double displacement
reaction to occur and in order for a white precipitate to be produced; however, we did not observe any significant
heat or temperature changes
...
The decomposition of hydrogen
peroxide catalyzed by the manganese dioxide at Station #4 was an exothermic reaction because the temperature
increased and the volume of the substance increased as a result
...
Conclusion:
Through this experiment, I have tested reactions of each of the four major types of chemical reactions: synthesis,
decomposition, single displacement, and double displacement
...
In addition,
I have classified each reaction as either exothermic or endothermic, and have explained the evidence (i
...
Title: Types of Reactions Lab
Description: Formal lab detailing synthesis, decomposition, single displacement, and double displacement reactions - outlining the purpose, materials/apparatus, general form of each equation, whether the reactions were endo- or exothermic, and the definition of a catalyst. Notes provided by an International Baccalaureate student.
Description: Formal lab detailing synthesis, decomposition, single displacement, and double displacement reactions - outlining the purpose, materials/apparatus, general form of each equation, whether the reactions were endo- or exothermic, and the definition of a catalyst. Notes provided by an International Baccalaureate student.