synthesis reactions also known as direct combination reactions. two or more reactants form a single...
TRANSCRIPT
Synthesis ReactionsSynthesis Reactions• Also known as direct combination
reactions.
• Two or more reactants form a single product.
• Generic Example:
• A + B AB
Synthesis ReactionsSynthesis Reactions
2Example: K + Cl2
K+1 and Cl-1
KCl
Remember to Balance!
2
Synthesis ReactionsSynthesis Reactions
2Example: Al + Br2
Al+3 and Br-1
AlBr3
Remember to Balance!
32
Decomposition ReactionsDecomposition Reactions
• A single reactant is broken down into two or more products.
• Generic Example:
• AB A + B
Decomposition ReactionsDecomposition Reactions
2Example: NaCl
Diatomic!!!
+ Cl2
Remember to Balance!
2 Na
+ O2Example: Al2O3
Decomposition ReactionsDecomposition Reactions
3
Diatomic!!!
Remember to Balance!
2 Al4
Single-Replacement RxnsSingle-Replacement Rxns
• A single element replaces an element in a compound to form a new compound and element.
• Generic Example:
• A + BX AX + B
Click here for a video that shows Ag replacing Cu
Single-Replacement RxnsSingle-Replacement Rxns
• You must use the Activity Series to determine if a reaction will work!
• Metals will replace other metals that appear below them
• (Pg. 295)
[http://cwx.prenhall.com/bookbind/pubbooks/hillchem3/medialib/media_portfolio/text_images/CH04/FG04_15.JPG]
Single-Replacement RxnsSingle-Replacement Rxns
[http://cwx.prenhall.com/bookbind/pubbooks/hillchem3/medialib/media_portfolio/text_images/
CH04/FG04_15.JPG]
Mg + AgNO3
Mg is above Ag, so the reaction will work!
Mg+2 and NO3-1
Mg(NO3)2+ Ag
Replaced Metal
2 2
Single-Replacement RxnsSingle-Replacement Rxns
[http://cwx.prenhall.com/bookbind/pubbooks/hillchem3/medialib/media_portfolio/text_images/
CH04/FG04_15.JPG]
Cu + FeSO4
Cu is below Fe, so the reaction will NOT work!
NR
“No Reaction”
Single-Replacement RxnsSingle-Replacement Rxns
• Non-metals will replace other non-metals that are below them on the periodic table.
[http://www.avon-chemistry.com/ch9_chart11.jpg]
Single-Replacement RxnsSingle-Replacement Rxns
Cl2 + KI
Cl is above I, so the reaction will work!
K+1 and Cl-1
KCl + I2
Diatomic!
2
[http://www.avon-chemistry.com/ch9_chart11.jpg]
2