Chemical Reactions Lab

Topics: Chemical reaction, Chemical reactions, Oxygen Pages: 4 (868 words) Published: May 2, 2013
Chemical Reactions Lab
Synthesis Reactions: Synthesis reactions occur when two elements or compounds combine to create one single compound. The general equation of synthesis reactions is: A+B→AB. The following are the complete balanced equations for the five synthesis reactions performed in the lab.

Reaction 1:

Reaction 2:

Reaction 3:

Reaction 4:

Reaction 5:

The reaction of CO2 and water is a prime example of a synthesis reaction. This is a synthesis reaction because it follows the general equation and the two compounds of H2O and CO2 combine to make an acidic solution of H2CO3, this was discovered in the lab when the solution was tested for acidity. Synthesis reactions occur to form a new solution out of two separate elements/compounds. There are many different types of synthesis reactions, each resulting in a different type of product. When these reactions occur, heat is often an energy that is deposited from the reaction.

Decomposition Reactions: Decomposition reactions occur when one compound decomposes into two separate elements/compounds. The general equation of decomposition reactions is: AB→A+B. The following are the complete balanced equations for the two decomposition reactions performed in the lab.

Reaction 6:

Reaction 7:

The decomposition of hydrogen peroxide is an example of decomposition. In the lab, this was tested when we added hydrogen peroxide and a catalyst of manganese together. When a glowing splint was held over the test tube after the peroxide and manganese had time to react, it relit, proving that oxygen was present as a product of the decomposition of the hydrogen peroxide. Decomposition reactions occur when a single substance breaks down into two or more simpler substances. This is often within the presence of a catalyst when a decomposition reaction is being produced in a lab setting, although the reaction occurs naturally without said catalyst. In most cases, the products include a solid/liquid...
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