CH 101 notes 11-7

CH 101 notes 11-7 - Identify the oxidizing and reducing...

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Identify the oxidizing and reducing agents C 12 H 22 O 11 (s) + 12O 2 (g) 12CO 2 (g)+ 11H 2 O (l) Section 11.2 Oxidation states (ox #s) Oxidation states (ox #s) Ox. # of H when bonded to nonmetals is ___, when bonded to most metals is ___ and when bonded to itself is ___. Fluorine is always assigned an oxidation number of __ -1 Oxidation number of atoms in elemental form is___. 0 Ox. # of Group 1A metals is always ___. Ox. # of Al is always ___ . +2 Ox. # of Group 2A metals is always ___. +1 +3 +1 -1 0 Ox # of O is ___. Except . .. -2 Ox. # of halogens is ___. Except. .. -1 Other elements take their cues from these with rules Section 4.4 T h e r u l s m t b a p i d n o . Identifying what changes in Oxidation Sate Good Candidates: Atoms in elements Transition elements Central atom of polyatomic ions Bad Candidates: O 2- or H 1+ (but not impossible) Section 11.2 Identify the oxidizing and reducing agents C 12 H 22 O 11 (s) + 12O 2 (g) 12CO 2 (g)+ 11H 2 O (l) Ox # -2 +1 0 0- 2 +4 -2 +1 12 (@0) 12 (@+4) Lose 48 e- 24 (@0) 24 (@-2) Gain 48 e- Oxidized (reducing agent) Reduced (oxidizing agent) # electrons lost = # electrons gained Section 11.2 Raleigh Raleigh o 3Cu(s) + 2NO 3 1- (aq) + 8H 1+ (aq) 3Cu 2+ (aq) + 2NO(g) + 4H 2 O(l) -2 +5 2 +2 -2 +1 3 (@0) 3 (@+2) Lose 6 e- : reducing agent 2 (@+5) 2 (@+2) Gain 6 e-: oxidizing agent +1 +2 Identify the A) oxidizing agent B) reducing agent Raleigh Raleigh o Section 11.2 3Cu(s) + 2NO 3 1- (aq) + 8H 1+ (aq) 3Cu 2+ (aq) + 2NO(g) + 4H 2 O(l) -2 +5 2 +2 -2 +1 3 (@0) 3 (@+2) Lose 6 e-: reducing agent 2 (@+5) 2 (@+2) Gain 6 e-: oxidizing agent +1 +2 Identify the A) oxidation ½ reaction B) reduction ½ reaction OIL RIG Cu(s) Cu 2+ (aq) + 2 e - NO 3
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This note was uploaded on 06/08/2008 for the course CH 101 taught by Professor Bigham during the Fall '08 term at N.C. State.

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CH 101 notes 11-7 - Identify the oxidizing and reducing...

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