Predicting Products in Chemical Reactions. Steps to Writing Reactions Some steps for doing reactions 1. 1. Identify the type of reaction 2. 2. Predict.

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Presentation transcript:

Predicting Products in Chemical Reactions

Steps to Writing Reactions Some steps for doing reactions Identify the type of reaction Predict the product(s) using the type of reaction as a model Balance it Don’t forget about the diatomic elements! (HI BrONClF) For example, Oxygen is O 2 as an element. In a compound, it can’t be a diatomic element because it’s not an element anymore, it’s a compound!

Synthesis Example C + O 2 OO C +  OO C OO C OO C O O C O O C O O C O O C O O C O O C O O C O O C O O C O O C O O C O O C General: A + B  AB

Synthesis: Practice Predict the products. Write and balance the following synthesis reaction equations. Sodium + chlorine  Na + Cl 2  Aluminum + fluorine  Al + F 2  Na + & Cl - Na + & Cl NaCl12 2

Decomposition Example 2HgO  O Hg O OO + General: AB  A + B

Decomposition: Practice Predict the products. Then, write and balance the following decomposition reaction equations: Lead (IV) oxide  PbO 2  Aluminum nitride  AlN  Is either a diatomic molecule? Is either a diatomic molecule? Pb + O

Single replacement Example: Zn + CuCl 2  Zn Cl Cu + General: AB + C  AC + B Cl Zn Cu +

Practice: Single Replacement Sodium chloride + fluorine  NaCl + F 2  Note that fluorine replaces chlorine in the compound. Aluminum + copper (II) nitrate  Al + Cu(NO 3 ) 2  22 NaF + Cl11 Na + & F - Na + & F Is chlorine a diatomic molecule? Is chlorine a diatomic molecule? 2

Double replacement Example: MgO + CaS General:AB + CD  AD + CB S O  Mg Ca + O S Mg Ca +

Practice: Double replacement Calcium chloride + sodium phosphate  CaCl 2 + Na 3 PO 4  Lead II nitrate + barium chloride Pb(NO 3 ) 2 + BaCl 2  +Ca 3 (PO 4 ) 2 Ca 2+ & PO Na + & Cl - 11 NaCl

Practice: Combustion C 5 H 12 + O 2  C 10 H 22 + O 2  568 CO 2 + H 2 O Remember products of combustion are always carbon dioxide and water 1

Mixed Practice State the type, predict the products, and balance the following reactions: BaCl 2 + H 2 SO 4  C 6 H 12 + O 2  Zn + CuSO 4  Cs + Br 2  FeCl 3 

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