AP chem unit 6

Lattice energy

energy needed to break the crystal lattice (solid) to form gas ions. Positive delta H

Types of alloys

Substitutional (brass), interstitial (carbon steel)

molecular solid prop

dont conduct, low BP, phase depends on polarity, some are insoluble in water, but are soluble in nonpolar solvents.

General order of MP of solids

molecular < metallic < ionic < network covalent

manometer equation

pgas = patm ± height

boiling point

temperature when vapor pressure = external pressure

solvent

whatever there is more of

solute

whatever there is less of

Hydration energy

energy lost when gas ions form IMFs with water

Heat of Solution

energy gained or lost when one mole of compound is dissolved in water (lattice energy + hydration energy)

factors that affect solubility

ONLY TEMPERATURE