Practice Exam (5-7) Flashcards

1
Q

calculate standard enthalpy

A

sum (products) - (reactants)

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2
Q

isoelectronic w/

A

= same number of e-

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3
Q

qsoln =

A

mΔTCs = qrxn

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4
Q

quantum numbers: n=

A

cannot = 0

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5
Q

quantum numbers: l=

A

0 –> n-1 (can’t be greater than n)

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6
Q

quantum numbers: ml =

A

-l –> l

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7
Q

bomb calorimetry

A

Qrxn = -CcalΔT

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8
Q

state functions

A

enthalpy, entropy, internal energy

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9
Q

state function examples

A

temperature, pressure, density, volume, ΔH

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10
Q

aufbau principle

A

ground state is generated by filling in levels lowest –> highest

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11
Q

hund’s rule

A

sharing is caring, must fill everyone w/ 1 first before 2nd

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12
Q

pauli exclusion principle

A

no same e- spins

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13
Q

murphy’s law

A

anything that can go wrong, will go wrong

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14
Q

mass of proton

A

1.67262192 × 10-27 kilograms

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15
Q

mass of electron

A

9.1093837 × 10-31 kilograms

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16
Q

Bohr Equation

A

∆E = (-2.18 x 10^-18 J)(1/n^2-1/n^2)

17
Q

gamma radiation

A

shortest wavelength, greatest energy

18
Q

visible light

A

in between infrared and ultraviolet

19
Q

ultraviolet radiation

A

longest wavelength

20
Q

isoelectronic: anion >/< cation

A

anion (-) > cation (+)

21
Q

atomic radius is not the same as…

A

ionic radius (size of radius)

22
Q

ionic radius increases…

A

left to right

23
Q

when does a substance have a standard enthalpy of formation of zero?

A

a gaseous element in its standard state
- ex: H2(g) is the standard state of hydrogen.

24
Q

ionization energies are…

A

endothermic

25
Q

Zeff increases…

A

left to right

26
Q

When forming a cation, electrons are removed from the energy level with…

A

the highest n value (p then s)

27
Q

smaller wavelength =

A

higher frequency = higher energy

28
Q

order of light waves

A

Gamma ray
X-ray
UV ray
visible light
Infrared
Microwaves
Radio frequency