Exp10prelabprocedure

Exp10prelabprocedure - Elizabeth VanConia Chemistry 153-37...

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Elizabeth VanConia Chemistry 153-37 TA-Liz Pre-Lab Procedure Exp. 10 Acids, Bases, pH, Hydrolysis, and Buffers CAUTION: Wear eye protection at all times Part A: Measuring the pH of common acids and bases 1. In separate containers, place about 25 mL of the following solutions: 0.1 M HCl 0.1 M H3BO3 0.1 M NH3 (aq) 0.1 M NaOII Measure pH of each solution with pH meter Rinse electrode before moving it from one solution to the next Record pH of each 2. Measure the pH of these same solutions using pH paper. Record values 3. Using measured pH values, consult pH scale (page 173) to determine approx. hydronium ion molarity of each solution. Instructor will determine which values to use pH of 4.0 indicates a hydronium ion concentration of 1x10^-4 M Part B: Measuring the pH of salt solutions 1. In separate containers, place about 25 mL of the following solutions: 0.1 M Na2CO3 0.1 M (NH4) 2SO4 0.1 M NaCl Measure pH of each using pH meter Record values
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This note was uploaded on 04/14/2011 for the course CHEM 153 taught by Professor Durham during the Spring '10 term at Saint Louis.

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Exp10prelabprocedure - Elizabeth VanConia Chemistry 153-37...

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