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Assigned problems _8

Assigned problems _8 - (b What is the percent ionization of...

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Chemistry 2080 Spring 2011 Problem Set #8 - due date: Friday April 8th at 2 pm Name:________________ Lab TA Name:__________________ Lab Day/Time:______________________ 1) (a) Calculate the pH of a 1.3x10 -7 M solution of benzoic acid at 25°C. (The pKa of benzoic acid is 4.19 at 25°C. You may have to take into account the autoionization of water).
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Unformatted text preview: (b) What is the percent ionization of the benzoic acid in this 1.3x10-7 M solution at 25°C? 2) Calculate the pH of a 0.17 M aqueous solution of ammonium chloride (NH 4 Cl) at 25°C. Assume that K b for ammonia (NH 3 ) is 1.8x10-5 at 25°C....
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