Key Prob Set 5 09-106 S 11

Key Prob Set 5 09-106 S 11 - (a) C 6 H 5 COOH(aq) (b) (CH 3...

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1 Name ______________________________ _ 09-106 Spring 2011 Recitation ( CIRCLE ONE TA and ONE TIME ): Christian Steve Brendan 6:30 7:30 Problem Set 5 DUE Wed. 3/30 IN LECTURE (20 points) 1. Calculate the pH of a 0.010 M solution of BaO. ( Watch the [OH - ] of this solution!) 2. At body temperature (37.0°C), K w = 2.4 x 10 -14 . (a) If the pH of blood is 7.4 under these conditions, what are the [H 3 O + ] and [OH - ]? (b) What is the pH of pure water under these conditions? 3. How many mL of 0.100 M HCl(aq) are needed to titrate 100 mL of 0.0200 M NaOH(aq) final pH of 10?
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2 4. Complete the following Lewis acid-base reactions, labeling the Lewis acids and bases. (a) ClO 2 (aq) + H 2 O(l) b (b) CO 2 (g) + OH - (aq) b 5. Write complete dissociation (or hydrolysis) equilibrium reactions and their corresponding K a or K b expressions for the following acids and/or bases. Circle the letter of the strongest acid and justify your choice.
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Unformatted text preview: (a) C 6 H 5 COOH(aq) (b) (CH 3 )NH 2 (aq) (c) NO 2-(aq) (d) C 5 H 5 NH + (aq) 6. Use a table of K a and K b values to determine whether each of the following reactions has a K < 1 (i.e. favors reactants). (a) H 2 PO 4-(aq) + F-(aq) b HPO 4 2-(aq) + HF(aq) (b) CH 3 COO-(aq) + HSO 4-(aq) b CH 3 COOH(aq) + SO 4 2-(aq) 3 7. Determine whether the following 1.00 M aqueous salt solutions are acidic, basic, or neutral. (a) LiClO (b) [C 5 H 5 NH]NO 3 (c) (CH 3 ) 2 NH 2 IO 3 [ K b of (CH 3 ) 2 NH = 5.9 x 10-4 ] (b) Rank the above salt solutions in order of increasing pH . Briefly justify your answer. (lowest pH) _____________ < _______________ < _______________ (highest pH) 8. Calculate the pH and [HClO 2 ] of an aqueous solution containing 0.100 M LiClO 2 and 0.100 M KCN. 4 9. Calculate the pH of 4.0 x 10-5 M C 6 H 5 OH ( K a = 1.6 x 10-10 )....
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This note was uploaded on 09/29/2011 for the course CHEMISTRY 09-106 taught by Professor Vuocolo during the Fall '09 term at Carnegie Mellon.

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Key Prob Set 5 09-106 S 11 - (a) C 6 H 5 COOH(aq) (b) (CH 3...

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