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Acids and bases.

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Presentation on theme: "Acids and bases."— Presentation transcript:

1 Acids and bases

2 Properties Properties of acids Aqueous solutions taste sour
Electrolytes Change the color of indicators React with metals to produce hydrogen gas Reacts with bases to produce salts and water

3 Nomenclature Naming Acids Identify the anion (cation will be hydrogen)
If single element, any hydro- and change ending to –ic If polyatomic ending in –ate, change –ate to –ic If polyatomic ending in –ite, change -ite to –ous To all end name with acid

4 Properties Properties of bases Aqueous solutions taste bitter
Bases change the color of indicators Dilute solutions feel slippery React with acids to produce salts and water Electrolytes

5 Arrhenius Theory Acid base theory Arrhenius Acids Arrhenius Bases
Any substance that ionizes to form hydronium ions in solution (produces H+) Arrhenius Bases Any substance that produces hydroxide ions in solution

6 Brønsted-Lowry Theory
Acid base theory Brønsted-Lowry Theory Brønsted-Lowry Acid Acids are proton donors Brønsted-Lowry base Bases are proton acceptors

7 Conjugate Acid Base Reactions
Examples

8 Lewis Theory Acid base theory Lewis Acid Lewis Base
Acid is an electron pair acceptor Lewis Base Base is an electron pair donor

9 Neutralization Reactions
Examples

10 Acid base calculations
[H3O+] x [OH-1] = 1 x 10-14 pH + pOH = 14 pH = -log [H3O+] Same applies to pOH pH scale 0-7 acid and 7-14 base

11 Calculations Examples

12 Common indicators Indicators Phenolphthalein Litmus Paper Methyl Red
Clear when acidic and pink when basic Litmus Paper Bases turn red blue and acids turn blue red Methyl Red Pink when acidic and light yellow when basic


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