Types of Chemical Reactions. Outline Types of Reactions – the 5 types Synthesis and Decomposition.
Types of Reactions
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Transcript of Types of Reactions
• Four driving forces for chemical reactions. – Formation of a solid – Formation of water – Transfer of electrons – Formation of a gas
Main Types of Reactions• Oxidation/Reduction:
–Synthesis –Decomposition–Single Replacement–Combustion
• Double Replacement:–Precipitation–Acid-Base
Oxidation- Reduction
• The transfer of electrons• To be discussed later…
Synthesis
• Two or more substances combine to form one product
A + X AX
Synthesis Reaction
Examples of Synthesis Reactions
Decomposition
• One reactant decomposes into two or more products.
AX A + X
Decomposition Reaction
Examples of Decomposition Reactions
Single Replacement
A + BX AX + BY + AX X + AY
Single Replacement Reaction
Examples of Single Replacement Reactions
Replacement of
• A metal by a more active metal• Hydrogen in water by a metal• Hydrogen in acid by a metal• Halogens by a more active halogen
Double Replacement
AX + BY AY + BX
The ions of two compounds in water solution exchange ions creating a solid, liquid or a gas.
Double Replacement Reactions
Examples of Double replacement Reactions
Combustion
• A substance reacts with oxygen releasing heat and light.– A + O2 → Various products
– Commonly: CXHY + O2 → CO2 + H2O• Hydrocarbon reacts with oxygen
(cumbustion/decomposition)