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8: Types of Chemical Reactions

  • Page ID
    313271
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    • 8.1: Classifying Chemical Reactions
      Chemical reactions are classified into types to help us analyze them and also to help us predict what the products of the reaction will be. The five major types of chemical reactions are synthesis, decomposition, single replacement, double replacement, and combustion.
    • 8.2: Aqueous Solutions and Solubility - Compounds Dissolved in Water
      When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process represents a physical change known as dissociation. Under most conditions, ionic compounds will dissociate nearly completely when dissolved, and so they are classified as strong electrolytes.
    • 8.3: Precipitation Reactions
      A precipitation reaction is a reaction that yields an insoluble product—a precipitate—when two solutions are mixed. Thus precipitation reactions are a subclass of exchange reactions that occur between ionic compounds when one of the products is insoluble. Because both components of each compound change partners, such reactions are sometimes called double-displacement reactions.
    • 8.4: Complete Ionic and Net Ionic Equations- Precipitation Reaction Examples
      For reactions involving aqueous ionic compounds, ionic equations can be a better way to represent the reactions. Ionic equations explicitly show the state of solvated ions. Net ionic equations can further simplify the representation of the reaction by removing ions that do not participate directly in it.
    • 8.5: Complete Ionic and Net Ionic Equations - More Examples
      Ionic equations are not just used for precipitation reactions. Examples are shown of writing ionic equations for single replacement and gas-forming reactions.
    • 8.6: Oxidation and Reduction
      During some reactions (redox reactions), electrons are transferred from one species to another. Oxidation and reduction are defined in terms of the transfer of electrons, oxygen, and hydrogen. The terms oxidizing agent and reducing agent are also defined.
    • 8.7: Redox Reactions in Organic Chemistry and Biochemistry
      Redox reactions are common in organic and biological chemistry, including the combustion of organic chemicals, respiration, and photosynthesis.


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