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3 Cards in this Set
- Front
- Back
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10.1 Properties of Acids and Bases |
Reaction of Acids - Acids react with metals to produce hydrogen gas - Hydrochloric acid reacts with carbonate compounds to produce carbon dioxide (HCL + NA2CO3 = co2 + NaCl + H2O) Reactions of Bases - Bases react with carbon dioxide to form carbonate - Bases react with oils and fats to produce soap (saponification-process of making soap) |
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10.2 Theoretical Acid-Base Definitions |
Arrhenius Theory of Acids and Bases - A base is an ionic compound that dissociates into cations and hydroxide ions when it dissolves in water. Hydroxide ions give bases their characteristic properties
- An acid is a molecular compound that ionizes to produce hydrogen ions in water. Hydrogen ions give acids their characteristic properties
Problems with theory 1. Can't explain bases like ammonia 2. No such thing as H+
Strong and weak acids - A strong acid is a substance that ionizes completely in water (low pH and vigorous activity) - A weak acid is a substance that only partially ionizes in water (moderate pH and mild activity)
pH and Acidity - A change in one pH unit represents a tenfold change in how acidic or basic a solution is (10^x) |
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10.3 Acid-Base Stoichiometry |
A titration is a procedure used to determine the concentration of one solution (the sample) using another standardized solution (the titrant) A titration curve is a graph that shows pH change throughout the titration The equivalence point is the point of a titration when neutralization is complete (amount of acid and base exactly match their mole ratio) The endpoint is the point in a titration when the indicator changes colour (how to know when titration is complete) |
