titration - f what is the pH after 40.0 mL of HBr is added...

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Chem 2B: Titrations! Clemens 1. Consider the titration of 20.0mL of 0.150 M pyridine (C 5 H 5 N, Kb =1.5x10 -9 ) with 0.150M HBr. a) what volume of HBr must be added to reach the equivalence point? The midpoint? b) What is the pH before any acid is added? c) what is the pH after 10.0 mL of HBr is added? d) What is the pH at the midpoint?
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e) what is the pH at the equivalence point?
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Unformatted text preview: f) what is the pH after 40.0 mL of HBr is added? 2. How many mL of 0.250M Mg(OH) 2 must be added to 15.0mL of 0.200M HNO 3 to reach the equivalence point? Careful! There’s a trick here! b) what is the pH at the equivalence point? 3. If 35.0mL of 0.175M HCN is titrated with 20.0mL of 0.150M Naoh, what is the pH?...
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