Chapter 9 - Reactions

Chapter 9 - Reactions

How many different elements are in: MgBr 2 NH 4 OH CH 3 OH CH 3 CH 2 OH CH 3 COOH Sr(NO 3 ) 2

How many atoms are represented by: K 2 S Li 3 PO 4 Sr(OH) 2 Fe(NO 3 ) 3 Al 2 (SO 4 ) 3 Mg 3 (PO 4 ) 2

List the elements in each compound, followed by the # of atoms of each. Ex. H 2 O H=2 atoms O=1 atom 1. C 6 H 12 O 3 6. Mg 3 (PO 4 ) 2 2. (NO 3 ) 2 7. 2(NO 3 ) 2 3. 4Cl 2 8. (NH 4 ) 3 4. Al 2 (SO 4 ) 3 9. 3(CO 3 ) 2 5. (C 2 S 3 O) 4 10. 2Al(NO 3 ) 3

Synthesis Reactions 1) Check reactants for diatomic 1) H 2, N 2, O 2, F 2, Cl 2, I 2, Br 2 2) Combine metal and nonmetal 3) Cross charges on product 4) Balance A + B AB

Synthesis Reactions 1) Check reactants for diatomic 2) Combine metal and nonmetal 3) Cross charges on product 4) Balance Sodium + oxygen

Synthesis Reactions 1) Check reactants for diatomic 2) Combine metal and nonmetal 3) Cross charges on product 4) Balance Potassium + Chlorine

Synthesis Reactions 1) Check reactants for diatomic 2) Combine metal and nonmetal 3) Cross charges on product 4) Balance Calcium + Sulfur

Synthesis Reactions 1) Check reactants for diatomic 2) Combine metal and nonmetal 3) Cross charges on product 4) Balance Copper (II) + Oxygen

Decomposition Reactions AB A + B 1. check charges on reactants 2. break apart into elements 3. check products for diatomic 4. balance

Decomposition Reactions 1. check charges on reactants 2. break apart into elements 3. check products for diatomic 4. balance Sodium chloride Aluminum oxide Magnesium phosphide

Decomposition Reactions 1. check charges on reactants 2. break apart into elements 3. check products for diatomic 4. balance Lithium nitride

Decomposition Reactions 1. check charges on reactants 2. break apart into elements 3. check products for diatomic 4. balance Calcium chloride

Decomposition Reactions 1. check charges on reactants 2. break apart into elements 3. check products for diatomic 4. balance Iron (II) oxide

Practice Synthesis: 1. Magnesium + phosphorus 2. Sodium + nitrogen 3. Tin (IV) + sulfur Decomposition: 4. Calcium bromide 5. Silver (I) oxide 6. Potassium iodide

Double Replacement Reactions AB + CD AD + CB 1) Write formulas on reactant side 2) Switch ions (outsides together, insides together) 3) Write formulas on product side 4) Cross charges 5) Balance

AB + CD AD + CB 1) Write formulas on reactant side 2) Switch ions (outsides together, insides together) 3) Write formulas on product side 4) Cross charges 5) Balance Sodium bromide + calcium nitride

AB + CD AD + CB 1) Write formulas on reactant side 2) Switch ions (outsides together, insides together) 3) Write formulas on product side 4) Cross charges 5) Balance Aluminum phosphide + lithium oxide

AB + CD AD + CB 1) Write formulas on reactant side 2) Switch ions (outsides together, insides together) 3) Write formulas on product side 4) Cross charges 5) Balance Gallium iodide + magnesium sulfide

AB + CD AD + CB 1) Write formulas on reactant side 2) Switch ions (outsides together, insides together) 3) Write formulas on product side 4) Cross charges 5) Balance 4) Iron (III) iodide + sodium phosphide 5) Magnesium oxide + sodium phosphide

AB + CD AD + CB 1) Write formulas on reactant side 2) Switch ions (outsides together, insides together) 3) Write formulas on product side 4) Cross charges 5) Balance 4) FeI 3 + Na 3 P FeP + 3NaI 5) 3MgO + 2Na 3 P Mg 3 P 2 + 3Na 2 O

Single Replacement Reactions AB + C AC + B 1) Write symbols on reactant side 2) Find out who will trade places 3) Check activity chart to see if possible 4) Switch ions (+ replaces +, - replaces -) 5) Cross charges & diatomics 6) Balance

AB + C AC + B 1) Write symbols on reactant side 2) Find out who will trade places 3) Check activity chart to see if possible 4) Switch ions (+ replaces +, - replaces -) 5) Cross charges & diatomics 6) Balance Potassium + aluminum phosphide

AB + C AC + B 1) Write symbols on reactant side 2) Find out who will trade places 3) Check activity chart to see if possible 4) Switch ions (+ replaces +, - replaces -) 5) Cross charges & diatomics 6) Balance Magnesium chloride + fluorine

AB + C AC + B 1) Write symbols on reactant side 2) Find out who will trade places 3) Check activity chart to see if possible 4) Switch ions (+ replaces +, - replaces -) 5) Cross charges & diatomics 6) Balance Calcium + potassium oxide Sodium iodide + bromine

AB + C AC + B 1) Write symbols on reactant side 2) Find out who will trade places 3) Check activity chart to see if possible 4) Switch ions (+ replaces +, - replaces -) 5) Cross charges & diatomics 6) Balance 5. Potassium + sodium nitride 6. Aluminum chloride + fluorine 7. Sodium oxide + magnesium

AB + C AC + B 1) Check charges & diatomic on reactant side 2) Check activity chart to see if reaction happens 3) Switch ions (ALWAYS put a positive with a negative) 4) Check charges & diatomic on product side 5) Balance 5) 3K + Na 3 N K 3 N + 3Na 6) 2AlCl 3 + 3F 2 2AlF 3 + 3Cl 2 7) Na 2 O + Mg no reaction

Identifying Reaction Types

Identifying Reaction Types

Identifying Reaction Types

Identifying Reaction Types

Identifying Reaction Types

Combustion Reactions General form is: C x H y + O 2 CO 2 + H 2 O Hydrocarbon a compound made of only carbon and hydrogen

Combustion Reactions 1. Put down CO 2 and H 2 O as products 2. Balance carbons & hydrogens first 3. Set up algebra problem for oxygen & solve 4. Double coefficients if necessary

CH 4 + O 2 --->

C 2 H 6 + O 2 --->

C 6 H 12 O 6 + O 2 --->

C 7 H 6 O + O 2 --->