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auth-4.php - Bases y Morphine (C 17 H 19 NO 3 ), a narcotic...

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A Solution Containing 2 or more Weak Acids y Find the pH of a mixture that contains 0.150 M HF (K a = 3.5 x 10 -4 ) and 0.100 M HClO (K a = 2.9 x 10 -8 ). What is the hypochlorite ion concentration at equilibrium?
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A Solution Containing 2 or more Weak Acids
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Bases y Strong Bases – soluble hydroxide salts, such as NaOH, Ca(OH) 2 , KOH, etc. y Weak Bases – molecules or ions that accept an H + ion from water leaving behind an OH - ion.
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Base Dissociation Constant y Much like K a . Can relate K a to K b .
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If the base is C 3 H 7 NH 2 what is the conjugate acid? C3H7NH- C3H7N H 3+ OH- H3 O+ M o re i n fo rm a ti n s . .. 9% 84% 1% 6% 1% 1. C 3 H 7 NH - 2. C 3 H 7 NH 3 + 3. OH - 4. H 3 O + 5. More information is required
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If the K b for a base is 5.1 x 10 -4 , what is value of K a for its conjugate acid? 1 9 6 .00 x 10- 4 1. x 0 - Need to know the iden. .. 3% 3% 90% 4% 1. 1961 2. 1.00 x 10 -14 3. 1.96 x 10 -11 4. Need to know the identity of the base
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Unformatted text preview: Bases y Morphine (C 17 H 19 NO 3 ), a narcotic used in painkillers, is a weak organic base. If the pH of a 7.0 x 10-4 M solution of morphine is 9.5, what is the value of K b ? Bases y Calculate the pH of a 0.20 M C 2 H 5 NH 2 solution (K b = 5.6 x 10-4 ). Quiz 5 02/12/10 Which authors have you used before? 1. Tro 2. Gilbert 3. Other If the [H + ] = 0.009 M, what is the [OH-]? 1. 111 M 2. 0.009 M 3. 1.11 x 10-12 M 4. 1.0 x 10-14 M If the [H + ] = 0.009 M, what is the pH? 1. 0.009 2. 2.05 3. 11.9 4. 1.0 x 10-14 If the [H + ] = 0.015 M, what is the pOH? 1. 0.015 2. 1.83 3. 12.18 4. 14 If a solution is basic the pOH at 25 o C: 1. is equal to 7 2. is less than 7 3. is greater than 7...
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This note was uploaded on 02/23/2010 for the course CHEM 105BL taught by Professor Warshel during the Spring '07 term at USC.

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auth-4.php - Bases y Morphine (C 17 H 19 NO 3 ), a narcotic...

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