7_LectureWeb - Learning Objectives 1/29/08 You should: 1....

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Learning Objectives 1/29/08 You should: 1. know the Arrhenius acid and base definitions for aqueous solutions and be able to apply them to identify acids and bases. 2. know the Brønsted-Lowry definitions for acids and bases. 3. be able to identify Brønsted-Lowry acids and bases as well as conjugate acid-base pairs. 4. understand that in the context of the Brønsted-Lowry definitions, acid-base reactions involve competition for H + with the strongest acid giving up H + and the strongest base receiving H + . 5. understand how the acid-base definitions for aqueous solutions can be expanded to treat other solvents (protonic and nonprotonic). 6. know the Lewis acid and base definitions and be able to identify acids and bases using these definitions. 7. know the Usanovich acid and base definitions. 8. understand the underlying premises of Donor-Acceptor Theory. Problems: pH Assume 25°C unless otherwise stated. 1. Calculate the hydroxide ion concentration [OH - ] and the pH of a solution that con - tains 0.100 moles of ammonia in 500 mL of solution. K b (NH 3 ) = 1.8 μ 10 - 5 2. Dissolve 0.10 mol of HCN to make 1.0 L of solution ( K a = 6.2 μ 10 - 10 ). What is the pH? 2 Acid-Base Reactions What is an acid or a base? The answer depends on the definition acid and base. Acid-Base Definitions Ë In Protonic Solvents Ë Aqueous Ë Arrhenius Ë Brønsted-Lowry Ë Nonaqueous Ë In Nonprotonic Solvents Ë Donor-Acceptor Models Ë Lewis Ë Usanovich Ë Donor-Acceptor Theory 3 Arrhenius An Arrhenius acid is a substance that increases the hydrogen (H + )/hydronium ion (H 3 O + ) concentration in aqueous solution.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/19/2008 for the course CEM 142 taught by Professor A.pollock during the Spring '08 term at Michigan State University.

Page1 / 3

7_LectureWeb - Learning Objectives 1/29/08 You should: 1....

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online