Chemistry - Chapter 19 Vocab

Front 1

acid-base buffer

Back 1

a solution that resists changes in pH when a small amount of either strong acid or base is added

Front 2

common-ion effect

Back 2

the shift in the position of an ionic equilibrium away from formation of an ion that is caused by the addition (or presence) of that ion

Front 3

Henderson-Hasselbalch equation

Back 3

an equation for calculating the pH of a buffer system

Front 4

buffer capacity

Back 4

a measure of the ability of a buffer to resist a change in pH

Front 5

buffer range

Back 5

the pH range over which a buffer acts effectively

Front 6

acid-base titration curve

Back 6

a plot of the pH of a solution of acid (or base) versus the volume of base (or acid) added to the solution

Front 7

equivalence point

Back 7

the point in a titration when the number of moles of the added species is stoichiometrically equivalent to the moles of the other species

Front 8

end point

Back 8

the point in a titration at which the indicatior changes color

Front 9

solubility-product constant

Back 9

an equilibrium constant for the dissolving of a slightly soluble ionic compound in water

Front 10

molar solubility

Back 10

the solubility expressed in terms of amount (mol) of dissolved solute per liter of solution

Front 11

complex ion

Back 11

an ion consisting of a central metal ion bonded covalently to molecules and/or anions called ligands

Front 12

ligand

Back 12

a molecule or anion bonded to a central metal ion in a complex ion

Front 13

formation constant

Back 13

an equilibrium constant for the formation of a complex ion from the hydrated metal ion and ligands