Chapter 4-d-B

Chapter 4-d-B - acid Understanding and using activity...

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Types of Redox Reactions Chapter 4 - d
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Types of Redox Reactions 1. Combination two or more substances to form 2Mg (s) + O 2(g) (always a single product) 2. Decomposition the of a single compound into (always a single reactant) 2 KClO 3(s) Not all decomposition are redox Cu(OH) 2(s) CuO (s) + H 2 O (l) not redox
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Cont., Types of redox reactions 3. Combustion a reaction in which a substance reacts , usually with the release of and to produce flame. Whatever combines with oxygen is (always) Elements: Iron 4 Fe (s) + 3 O 2(g) Compounds: Acetylene 2C 2 H 2(g) + 5 O 2(g) 4 + 2H 2 O (g) 0 0 -2 -2 0 +1 -1
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Cont., 4. Displacement Reactions: an ion (or atom) in a compound is of another element (ions are displaced by neutral element) a) Halogen displacement The oxidizing power of these elements down the periodic table 2(g) (aq) (aq) 2(l)
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Cont., b. Metal displacement- a neutral metal in solution 0 -2 -2 +1 0 +1
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Cont., Some metals will react with:
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Unformatted text preview: acid Understanding and using activity series so; Activity Series Rules 1. Any metal can displace another metal (ion) from solution if the metal (ion) being displaced is below it in the table Any metal metal cations Any metal cation metals 2. Any metal will displace H ______________ 3. Any metal will_________ with either acid or water Understanding the activity series Cu ( s ) + 2 AgNO 3 ( aq ) (Remember, Cu above Ag+) 2 Ag ( s ) + Cu(NO 3 ) ( aq ) Fe ( s ) + 2 HCl ( aq ) Pt ( s ) + 2 HCl ( aq ) Remember, Fe is above H2 in the series Pt is not Cont., 5. Disproportionation an element in one oxidation state is oxidized and reduced The element involved must: a) have @ least 3 oxidation states b) be in an ox. State +1 +1-2 +1-2 +3-2-2...
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Chapter 4-d-B - acid Understanding and using activity...

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