Chem2080ReviewQuestions Prelim 2

Chem2080ReviewQuestions Prelim 2 - 6 H 5 COO-b) 9.00x10-2 M...

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1. The antimalarial drug quinine, C 20 H 24 O 2 N 2 , is a diprotic base with a water solubility of 1.00g/1800mL of solution. a) Write equations for the ionization equilibria corresponding to pKb 1 =6.0 and pKb 2 =9.8 b) What is the pH of a saturated solution of aqueous quinine?
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2. A large flask was filled with 0.100 atm N 2 O, 0.0500 atm O 2 , and 1.00x10 -6 atm NO. What will be the equilibrium partial pressure of NO (g)? N 2 O (g) + ½ O 2 (g) 2 NO (g) K c = 1.70x10 -13 @ 25ºC
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3. What is the pH of a solution with the following initial concentrations? Note: Ka (C 6 H 5 COOH) = 6.3x10 -5 a) 0.100M C 6 H 5 COOH and 0.200M C
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Unformatted text preview: 6 H 5 COO-b) 9.00x10-2 M C 6 H 5 COOH and 2.00x10-3 M C 6 H 5 COO-4. Given the equilibrium constant values @ 25 o C, N 2 (g) + ½ O 2 ∏ N 2 O (g) K c = 2.7x10-18 N 2 O 4 (g) ∏ 2 NO 2 (g) K c = 4.6x10-3 ½ N 2 (g) + O 2 (g) ∏ NO 2 (g) K c = 4.1x10-9 determine K c and K P for the reaction 2 N 2 O (g) + 3 O 2 (g) ∏ 2 N 2 O 4 (g) 5. Determine the pH of the resultant solution if you add the following volumes of 4.0 M HCl to a 20mL solution of 2.0M NaOCl (Ka of HOCl = 2.9 x 10-8 ). a) 0mL HCl b) 5mL HCl c) 10mL HCl...
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This note was uploaded on 04/29/2011 for the course CHEM 2080 taught by Professor Davis,f during the Spring '07 term at Cornell.

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Chem2080ReviewQuestions Prelim 2 - 6 H 5 COO-b) 9.00x10-2 M...

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