CHAPTER 4: Types of Chemical Reactions
CHAPTER 4: Types of Chemical Reactions
?Dissolution ?Precipitation ?Acids and Bases and their reactions ?Oxidation-Reduction Reactions
CHEM 1310 A/B Fall 2006
Dissolution of Ionic Compounds
CHEM 1310 A/B Fall 2006
Dissolution of Molecules
CHEM 1310 A/B Fall 2006
Electrolytes
? Substances which increase the conductivity of water when they dissolve
? Usually ionic compounds (e.g., NaCl), but some molecules can also dissolve into ions (e.g., acids like HCl, HNO3). Strong bases can also be electrolytes (NH3 can split H2O into ions).
CHEM 1310 A/B Fall 2006
Solubility
? Tells how much of something (the "solute") will dissolve into a given solvent
? Example: incomplete dissolution of sugar in iced tea
? Observation: hot tea dissolves sugar much easier than iced tea. This implies...
? Another observation: Coke goes flat faster at higher temperatures. Why? Solubility of gases change ...
CHEM 1310 A/B Fall 2006
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