CHEM 1123 Project 5 for Spring 2010 (1)

CHEM 1123 Project 5 for Spring 2010 (1) - 2 H 3 O 2 =...

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CHEM 1123 Project #5 Spring, 2010 NAMES: 1. Morphine (C 17 H 19 NO 3 ), a narcotic used in pain killers, is a weak organic base. If the pH is 9.5 for a 7.0x10 -4 M solution of morphine, what is the value of K b ? 2. Find the pH of a buffer solution with the following: 0.405 M HCOOH (formic acid) with 0.326 M in the salt form HCOONa (sodium formate). HINT: pK a for formic acid = 3.74 3. a) Complete the equation for the reaction between acetic acid and the hypochlorite ion. b) Now give the direction favored for the equilibrium (forward or reverse). HINT: K a for HC
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Unformatted text preview: 2 H 3 O 2 = 1.8x10-5 K a for HOCl = 2.9x10-8 . CHEM 1123 Project #5 Spring, 2010 NAMES: 1. Calculate the pH of a 0.35 M sodium hypochlorite solution. HINT: The K a for HOCl = 2.9x10-8 . 2. How many moles of NaOH would you add to 1.00 L of 0.16 M HOCl(aq) to form a buffer with pH = 7.20? 3. a) Complete the equation for the reaction between acetic acid and the nitrite ion. b) Now give the direction favored for the equilibrium (forward or reverse). HINT: K a for HC 2 H 3 O 2 = 1.8x10-5 K a for HNO 2 = 7.1x10-4....
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CHEM 1123 Project 5 for Spring 2010 (1) - 2 H 3 O 2 =...

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