DAILY QUESTION

November 25, 2008

1. A neutralization reaction occurs between an ______ and a _______.

Agenda 11/25/08

• Daily Question• Check-in: Lab Worksheets• Ch 8 Section 2 Notes

Assignments: 1. 8-2 Worksheet due 11/26

Neutralization Reaction

• A reaction between an acid and a base

• Spectator ions are ions that do not change during the reaction between H3O+ and OH-

.

Salts

• Strong acids and bases react to form water and a salt

• Salts are ionic compounds that form when a metal atom or a positive radical replaces the hydrogen of an acid

• Salts are often soluble in water

Not all neutralization reactions produce neutral solutions

• The final pH of a solution depends on the amounts of acid and base that are combined AND whether they are strong or weak

Titration

• Process of gradually adding one solution to another solution in the presence of an indicator to determine the concentration of one of the solutions

• During process, the color changes

Equivalence Point

• Original amount of the acid equals the original amount of the base

• Can occur at the pH 7 – which is neutral

• But the equivalence point is not always neutral– Strong base and weak acid – Weak base and strong acid

Salts (including NaCl, but not limited to NaCl)

• Have many different uses– Seasoning on food– Water softeners– Medical diagnosis

• Are all around us– In food– Building materials– Soaps – Detergents