Chapter 9 - Reactions

Transcription

1 Chapter 9 - Reactions

2 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

3 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

4 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 ) (NO 3 ) Cl 2 8. (NH 4 ) 3 4. Al 2 (SO 4 ) (CO 3 ) 2 5. (C 2 S 3 O) Al(NO 3 ) 3

5 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

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

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

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

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

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

11 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

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

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

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

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

16 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

17 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

18 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

19 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

20 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

21 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

22 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

23 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

24 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

25 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

26 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

27 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

28 Identifying Reaction Types

29 Identifying Reaction Types

30 Identifying Reaction Types

31 Identifying Reaction Types

32 Identifying Reaction Types

33 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

34 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

35 CH 4 + O 2 --->

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

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

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