Acids, Bases, Equilibrium 9.11.11

Acids, Bases, Equilibrium 9.11.11 - higher the acidity...

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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 1. What is a bronsted-lowry acid and base ? 2. Define amphoteric . 3. How is acidity measured ? What are the two formulas ? 4. List six strong acids . 5. Strong acids dissociate _____________, have a (high/low) Ka and a (high/low) pKa , whereas weak acids dissociate _____________, have a (high/low) Ka and a (high/low) pKa . 6. List eight strong bases . 7. Strong bases dissociate _________________, whereas weak bases either dissociate _______________ or protonate ___________________. 8. What is the equilibrium constant ? What does it tell you? When dealing with acids , it is known as ___________________________________. 9. The
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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.

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Acids, Bases, Equilibrium 9.11.11 - higher the acidity...

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