Lecture9 - HOCl HClO 4 HClO 3 HClO 2 Neutral Salts Predicting pH of Salts Type of Salt 1 NH 4 Cl 2 CaF 2 3 Na 2 S 4 KBr 5 Li 2 CO 3 6 Mg(NO 3 2

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Acid Mixes, Polyprotics, Acid Structure, Salts, Lewis AB Reading: 14.7 to 14.12 HW: Page 692 # 103, 111, 113, 115, 117, 125, 127, 133, 137
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Acid Mixtures Mixture A: 0.2 M HCl (large K a ) and 0.2 M HF (K a = 10 -4 ) Mixture B: 0.2 M HCN (K a = 10-10) and 0.2 M HF (K a =10 -4 )
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Polyprotic Acids Phosphoric Acid H 3 PO 4 ↔ H + + H 2 PO 4 - K a1 = 7.5 x 10 -3 H 2 PO 4 - ↔H + + HPO 4 2- K a2 = 6.2 x 10 -8 HPO 4 2- ↔ H + + PO 4 3- K a3 = 3.6 x 10 -13 Sulfuric Acid H 2 SO 4 ↔H + + HSO 4 - K a1 = large HSO 4 - ↔ H + + SO 4 2- K a2 = 10 -2
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Molecular Structure , Acid Strength H - X, weaker bond between H and X means stronger acid
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Unformatted text preview: HOCl HClO 4 HClO 3 HClO 2 Neutral Salts Predicting pH of Salts Type of Salt? 1) NH 4 Cl 2) CaF 2 3) Na 2 S 4) KBr 5) Li 2 CO 3 6) Mg(NO 3 ) 2 Lewis Acid / Base Theory • Lewis Acid *accepts e- pair to form bond *electron deficient species (BeX 2 , BX 3 , transition metal ions) • Lewis Base *donates e- pair to form bond *have unbonded e- pairs (lone pairs) Lewis Acid/Base Reactions • NH 3 + BF 3 → NH 3 BF 3 • Ag + + 2NH 3 →Ag(NH 3 ) 2 + • Co 2+ + 4OH-→ Co(OH) 4 2-...
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This note was uploaded on 08/26/2011 for the course CHEM 104 taught by Professor Quigley during the Spring '08 term at CUNY Hunter.

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Lecture9 - HOCl HClO 4 HClO 3 HClO 2 Neutral Salts Predicting pH of Salts Type of Salt 1 NH 4 Cl 2 CaF 2 3 Na 2 S 4 KBr 5 Li 2 CO 3 6 Mg(NO 3 2

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