Thursday, February 24, 2011

Types of Reactions Continued

            There are 6 types of reactions, and 3 of them have already been covered (synthesis, decomposition, and single replacent). Now, we will look at double replacement, combustion, and neutralization.

Double Replacement:
Reaction between two ionic combounds. (AB+CD------> AD+CB)
All ions bond with other ions that they have nota been with yet; then balance the equation.
Eg:  2LiCl + SrO -----> Li2O + SrCl2    
Eg:   RbF + CsBr-----> RbBr + CsF

A combustion reaction between organic molecules  and an oxidant. The product will always contain water (H2O and Carbon Dioxide.
Eg: CH4 + 2O2 ----> CO2+ H2O

A neutralization reaction is when an acid reacts with a base to form a salt. The product will always include H2O. Acids have H in the front, and bases have OH at the end.
Eg: HCl + NaOH---> NaCl+ H2O

* Look at the solubility sheet to see which compounds are soluble or not soluble.
Here is a link to rules of solubility tutorial!                   
If all  the compounds are aq, there will be no reaction!

Net Ionic Equations:
Ions that are not useful in the reaction are reduced out of the equation.


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