Chem 103 2011 Lecture 12

Chem 103 2011 Lecture 12 - Chemistry 103 Chemistry 103...

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Unformatted text preview: Chemistry 103 Chemistry 103 Spring 2011 Spring 2011 Chemistry of Life Processes Chemistry of Life Processes REVIEW OF COMPLEX ION EQUILIBRIA REVIEW: Buffering of Blood pH QUIZ 2: Tomorrow Comprehensive through/including Chapter 18-8 memor ize Solubility Rules and for mat of the master equations : K a , K b , K w , K w = K a x K b , K sp , K f LECTURE #12 Wednesday April 20, 2011 PROFESSOR O’HALLORAN • Average = 15.3 (61%) • Standard Deviation=5.9 Homework Assignment Due Wednesday Apr il 28, 2011 Chapter 14: Chemical Kinetics Read 14-1 through and including 14-8 Problems Due by Wednesday 4/ 28/ 11 : 1, 5, 6, 8,11,13,15,17, 21, 22, 23, 27, 29, 34, 43, 45, 46,49, 51, 57, 58 Last nights problem… Calculate the solubility of AgBr in water and in 1.0 M S 2 O 3 2- solution. (use tables in Chapter 18 as needed) Ag + (aq) + 2S 2 O 3 2- (aq) ⇋ [ Ag(S 2 O 3 ) 2 ] 3- (aq) K f AgBr (s) ⇋ Ag + (aq) + Br- (aq) K sp = 1.7 × 10 13 = 5.0 × 10- 13 The solubility of AgBr in in 1.0 M S 2 O 3 2- solution is approximately: 1. 4 x 10 1 M 2. 4 x 10-1 M 3. 4 x 10-3 M 4. 4 x 10-6 M Calculate the solubility of AgBr in 1.0 M S 2 O 3 2- solution. ✔ Write chemical equations for formation (and dissolution of salt) Ag + (aq) + 2S 2 O 3 2- (aq) ⇋ [ Ag(S 2 O 3 ) 2 ] 3- (aq) K f AgBr (s) ⇋ Ag + (aq)...
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Chem 103 2011 Lecture 12 - Chemistry 103 Chemistry 103...

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