In class notes for November 26, 2007

In class notes for November 26, 2007 - -are present at same...

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General Chemistry Lecture 102a In class notes for November 26, 2007 Your score on front of exam is not your actual score. o Your real score is 100 – (grade on your exam – 8) and divide that by 92 Last lecture o Hydrolysis of salts Metals that do not effect pH o Group I, II, and Ag + ions Anions that do not effect pH o Cl - , Br - , I -, NO 3 - , ClO 4 - , HSO 4 - , ClO 3 - NaCl(aq) → No change to pH NaF(aq) → Basic solution NH 4 Cl→Acidic solution So far…pH of weak acids and bases o HA + H 2 O A - + H 3 O + weak acid equilibrium o A - + H 2 O HA + OH - weak base equilibrium (HA is zero initially) Buffers o HA and A
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Unformatted text preview: -are present at same time o See RICE A o Use the Henderson-Hasslebach Equation (on written notes) o Example 45 mL of 1.0 M H 3 PO 4 + 45mL of 1.0 M H 2 PO 4- The equation we will be dealing with is the weak acid equilibrium H 3 PO 4 + H 2 O H 2 PO 4-+ H 3 O + See B Add 10mL of 0.50 M HCl to solution See C o Start with 90mL H 2 O at pH= 2.12 and add 10mL HCl at 0.50 M o See D General Chemistry Lecture 102a In class notes for November 26, 2007 o Wednesday we will do what happens when a base is added....
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This note was uploaded on 02/22/2009 for the course CHEM 102a taught by Professor Hanusa during the Fall '06 term at Vanderbilt.

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In class notes for November 26, 2007 - -are present at same...

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