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230_Sp10_L21_post - CHEM 230 Sp10 Lecture 21 Chapter 10...

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CHEM 230 Sp10 Lecture 21 Chapter 10: Acids and Bases 1) Salts 2) Polyprotics 3) How low can you go? Session ID: 230
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Concept Question a) What are ALL of the species other than water present in a 0.1 M aqueous solution of NaCN? b) What is the pH of the solution? A) a) Na + and CN - b) pH = 7 B) a) Na + and CN - b) pH > 7 C) a) Na + , CN - , HCN, and OH - b) pH = 7 D) a) Na + , CN - , HCN, and OH - b) pH >7 E) a) Na + , CN - , HCN, H 3 O + , and OH - b) pH = 7 F) a) Na + , CN - , HCN, H 3 O + , and OH - b) pH >7
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Concept Question a) What are all of the species other than water present in a 0.1 M aqueous solution of NaCN b) What is the pH of the solution? A) a) Na + and CN - b) pH = 7 B) a) Na + and CN - b) pH > 7 C) a) Na + , CN - , HCN, and OH - b) pH = 7 D) a) Na + , CN - , HCN, and OH - b) pH >7 E) a) Na + , CN - , HCN, H 3 O + , and OH - b) pH = 7 F) a) Na + , CN - , HCN, H 3 O + , and OH - b) pH >7
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Aqueous Anions
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Aqueous Cations
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d and p block +2 and +3 metal ions in water Water will coordinate to the metal ion: Cu 2+ in H 2 O Cu(H 2 O) 6 2+ Backbonding of the metal to the water molecules weakens the O-H bond, and so metal hydrates can serve as Bronsted acids: Cu(H 2 O) 6 2+ (aq) + H 2 O (l)
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