Practice Exam (5-7) Flashcards
calculate standard enthalpy
sum (products) - (reactants)
isoelectronic w/
= same number of e-
qsoln =
mΔTCs = qrxn
quantum numbers: n=
cannot = 0
quantum numbers: l=
0 –> n-1 (can’t be greater than n)
quantum numbers: ml =
-l –> l
bomb calorimetry
Qrxn = -CcalΔT
state functions
enthalpy, entropy, internal energy
state function examples
temperature, pressure, density, volume, ΔH
aufbau principle
ground state is generated by filling in levels lowest –> highest
hund’s rule
sharing is caring, must fill everyone w/ 1 first before 2nd
pauli exclusion principle
no same e- spins
murphy’s law
anything that can go wrong, will go wrong
mass of proton
1.67262192 × 10-27 kilograms
mass of electron
9.1093837 × 10-31 kilograms
Bohr Equation
∆E = (-2.18 x 10^-18 J)(1/n^2-1/n^2)
gamma radiation
shortest wavelength, greatest energy
visible light
in between infrared and ultraviolet
ultraviolet radiation
longest wavelength
isoelectronic: anion >/< cation
anion (-) > cation (+)
atomic radius is not the same as…
ionic radius (size of radius)
ionic radius increases…
left to right
when does a substance have a standard enthalpy of formation of zero?
a gaseous element in its standard state
- ex: H2(g) is the standard state of hydrogen.
ionization energies are…
endothermic
