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Reaction Types. Classifying Reactions. Types of Chemical Reactions. Synthesis Decomposition Single replacement Double Replacement Combustion. Synthesis. Two or more substances react to form ONE product A + B AB. Synthesis. Reaction of two elements. 2. 3. 2.
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Reaction Types Classifying Reactions
Types of Chemical Reactions Synthesis Decomposition Single replacement Double Replacement Combustion
Synthesis Two or more substances react to form ONE product A + B AB
Synthesis Reaction of two elements 2 3 2 ___Al + ___Cl2 ___AlCl3 Al3+ Cl1-
Decomposition One substance breaks down into two or more simpler products AB A + B
Decomposition 2 2 3 __ NaN3 (s) ___ Na (s) + ___ N2 (g) 2 2 __ CaO (s) ___ Ca (s) + ___ O2 (g)
Single Replacement Reactions One element replaces another element in a compound to form a new compound and element A + BX AX + B
Reactivity Series Metals A more reactive metal will replace a less reactive metal in a solution Li K Ca Na Mg Al Mn Zn Fe Ni Sn Pb Cu Ag Au most active least active
examples aluminum + iron (III) oxide Fe3+ O2- More reactive? 2 2 + Al + Fe2O3 Fe Al2O3 Al3+ O2-
examples silver + copper (I) nitrate Cu1+ NO31- More reactive? Ag + CuNO3 NO RXN
Double Replacement Exchange of cations between two ionic compounds A B + C D AD + CB switch
Will the Solutions React? One of the following things must occur for a reaction to occur: Precipitate is produced [(s) or ()] Gas is evolved [(g) or ()] Water is made [(l) or (g)] Use the solubility rules to determine if a solid is made
Example Problem Lithium iodide and aqueous silver nitrate react Li1+ I1- Ag1+ NO31- LiI AgI + AgNO3 (aq) (aq) (s) + LiNO3 (aq) Use a solubility table to determine state of each component.
Combustion Compound reacts with O2 Hydrocarbon – compound with only carbon and hydrogen
Combustion Combustion of hydrocarbons ALWAYS produces CO2 and H2O CxHy + O2 CO2 + H2O
Example Problem Show combustion of propane (C3H8) gas C3H8 + 5 O2 3 CO2 + 4 H2O