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Unformatted text preview: higher the acidity , the (greater/lesser) the Ka , and the (greater/lesser) the pKa . 10. Kw = Practice Problems: Identify the acid and base and its conjugates. Then write the equilibrium constant expression. CH 3 COOH (aq) H + (aq) + CH 3 COO-(aq) NH 3 ( aq ) + H 2 O( l ) NH 4 + ( aq ) + OH-( aq ) Susie Lee ([email protected]) Acids, Bases, Equilibrium SI sessions CHEM 222 Sun 6-7p BLOC 105 9/11/11 6-7p Mon 6-7p BLOC 105 Wed 6-7p BLOC 105 HOAc( aq ) + H 2 O( l ) H 3 O + ( aq ) + OAc-( aq ) Calculate the pH. 1. [H 3 O + ]= 0.1 M 2. [OH-]= 0.0015 M 20 mL of 0.1 M solution of a weak acid was mixed with 8 mL of 0.1 M solution of NaOH. Measured pH was 5.12. Calculate pKa....
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This note was uploaded on 02/17/2012 for the course CHEM 222 taught by Professor Si during the Fall '11 term at Texas A&M.
- Fall '11