Key Prob Set 7 09-106 S 11

Key Prob Set 7 09-106 S 11 - Name _ Recitation (CIRCLE ONE...

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1 Name ______________________________ _ 09-106 Spring 2011 Recitation ( CIRCLE ONE TA and ONE TIME ): Christian Steve Brendan 6:30 7:30 Problem Set 7 DUE Wed. 4/27 by 9 PM at DH 2114 (20 points) Part I – Problems 1. You want to make a buffer of pH 6.0 using 1.0 L of 1.0 M H 2 Z(aq) ( K a1 = 0.3, K a2 = 5 x 10 -7 ) and 1.0 M NaOH(aq). What volume of the NaOH solution is needed?
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2 2 . Consider the titration of 50.0 mL of 1.00 M H 2 CO 3 (aq) with 1.00 M KOH(aq). Calculate the pH after the following volumes of KOH are added. (a) 50.0 mL
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3 (b) 75.0 mL
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4 (c) 100.0 mL
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5 3. Calcium oxalate (CaC 2 O 4 ) is insoluble in water ( K sp = 2 x 10 -9 ). By what factor is it more soluble in 0.10 M H 3 O + (aq) than in pure water? (In pure water, ignore the basic properties of C 2 O 4 2- ).
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6 Part II Virtual Lab This Virtual Lab activity involves using solubility equilibria to study acid mine effluent. Please go to the chemcollective link on the Assignments site to access this assignment. In the spaces that follow, please
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This note was uploaded on 09/29/2011 for the course CHEMISTRY 09-106 taught by Professor Vuocolo during the Fall '09 term at Carnegie Mellon.

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Key Prob Set 7 09-106 S 11 - Name _ Recitation (CIRCLE ONE...

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