2.4 Types of Chemical Reactions

chemistry

Single Replacement

Single replacement reactions replace one element from a compound with a separate element added as a reactant.
Definition: A single replacement reaction is when a compound and an element react, and the element switches places with part of the original compound. Positive ions will only replace a positive ion and negative ions will only replace a negative ion.
    • A + BC --> B + AC where A is a metal, or
    • A + BC --> C + BA where A is a non-metal
When A is a metal:
  • Aluminum foil in a solution of copper (II) chloride produces solid copper and aluminum chloride.
2 Al + 3 CuCl2--> 3 Cu + 2 AlCl3

When A is a non-metal:
  • When fluorine is bubbled through a sodium iodide solution, iodine and sodium fluoride are produced.
F2+ 2 NaI --> I2 + 2 NaF


Here is a video to further explain single displacement reactions, it is a two part video.