Module 17: Acids, Bases, and Salts

Acidity

a measure of the hydrogen (hydronium) ion concentration of a solution

Alkalinity

a measure of the hydroxide ion concentration of a solution

Arrhenius Acid

a substance that produces hydronium ions

(H3O+) as the only positive ions when dissolved in water

Arrhenius Base

a substance that produces hydroxide ions (OH-) as the only negative ions when dissolved in water

Electrolyte

a substance whose water solution conducts an electric current

Hydrogen ion

a hydrogen ion without its electron (consisting solely of a proton)

Hydronium ion

H3O+, formed by the combination of a water with a hydrogen ion

Indicator

a substance that undergoes a color change that can be used to determine when a reaction is complete

Neutralization

the reaction between an acid and a base to produce water and a salt

pH scale

a logarithmic scale that measures the acidity or alkalinity of a solution on a scale of 1 to 14

Salt

the product (other than water) of a neutralization reaction; an ionic substance consisting of a metallic cation and anion other than hydroxide ion

Titration

the process of determining the concentration of an unknown solution by a reaction with a solution of known concentration