Page 381 - Instant notes

Index 367

zone, 121
Electropositive, 224
Elementary reaction, 142–143, 152
Elevation, boiling point, 80
emf, 103
Emission spectroscopy, 239
End point, 65
Endothermic process, 33, 56, 96
Energy, 27–28
Energy levels, 175, 197, 237
hydrogen atom, 184–185
hydrogen-like atom, 197–198
particle in a box, 178
particle in a circular orbit, 181
population ratio, 200–202
rotational, 246–248
vibrational, 252–253
Enthalpy, 32–34
of activation, 140
of combustion, 37–38
reaction enthalpy from, 38
of electron affinity, 37
of formation, 37
reaction enthalpy from, 37
of ionization, 37
of lattice, 38, 229, 230
of reaction, 34, 36–39
of solution, 37, 96
of solvation, 37, 96
of sublimation, 37
of vaporization, 37
properties, 33–34
relation to heat capacity, 33
relation to internal energy, 32
sign of, 33
standard change, 36
standard of fusion, 79
standard of vaporization, 56, 80
Enthalpy change, 34
temperature dependence, 34
of cell reaction, 108
Entropy, 28, 40–43, 202–203
of activation, 140
partition function, 202–203
phase changes, 41–42
relation to disorder, 42–43
relation to heat, 48
spontaneity, 45, 49
statistical definition, 42–43, 45, 202–203
thermodynamic definition, 28
Entropy change, 45, 48–49
cell reaction, 108