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DAT Destroyer review > gen chem > Flashcards

gen chem Flashcards

(73 cards)

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1
Q

be super careful in choosing acid base pair eqns

A

yes

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2
Q

pay attention to wording!!

A

please

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3
Q

go with gut answer

A

yes

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4
Q

give me the half life formula for first order rxn

A

k (rate constant) t (half life)= 0.693

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5
Q

when given w/w, write out a conversion factor

A

like 2%–> 2g/ 100g

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6
Q

electrolysis of water eqn

A

2H2)->H2 + O2

- o2 is made at the anode!

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7
Q

always convert to

A

moles!

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8
Q

use dimensional analysis when confused

A

!!

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9
Q

how many molecules per mole?

A

6 x10^23

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10
Q

think very carefully about multiple option qns

A

pls

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11
Q

Molarity units

A

mols/ LITRE

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12
Q

when solution SUPER dilute acid or base

A

the pH is just 7!!

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13
Q

diiodine at room temp

A

is a SOLID

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14
Q

enthalpy of formation of liquid water

A

NOT 0!!!

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15
Q

molecular solids and melting and boiling points

A

LOW MELTING POINT, weak forces

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16
Q

network solid and boiling points

A

VERY HIGh melting point!!

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17
Q

rate law how to write

A

ONLY through experiment, NOT COEFFICIENTS EVER!

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18
Q

solubility in NH3

A

this is complexation!! Transition metals always form complex ions

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19
Q

don’t ever NOT look at periodic table!!

A

plz

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20
Q

lanthanides and actionids

A

fill 4f and 5f orbitals

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21
Q

gases at same pressure and temp

A
  • density and velocity will be different but temperature and molecule number is the SAME
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22
Q

higher concentration in buffer

A

means more buffer capacity.

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23
Q

lone pair counts in hybridization!!!

A

plz remember!!

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24
Q

second law of thermo

A

In most energy systems , energy is partly

converted to hεat. Thεre is an unstoppable move in the direction of disorder.

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25
permanganate ion charge
-1
26
buffer is made up of
a wεak acid or a wεakbasε and its salt. recall if a strong acid or a strong base is in εxcess you no longer have a buffer
27
when doing redox balancing
DO THE WHOLE THING REGARDLESS OF THE QN
28
when picking quantum numbers
remember s,p,d,f and l values!!
29
so3 polarity
nonpolar!
30
ideal gas at constant tem to not have same ___ energy
KINETIC ENERGY | - remember maxwell boltzman
31
micro
-6
32
milli
-3
33
centi
-2
34
nano
-9
35
kilo
3
36
pico
-12
37
nh3 polarity
POLAR
38
Heating must be carεfully controllεd to avoid (hydrate)
decomposing salt
39
Always makε surε a samplε | is coolεd beforε it is wεighεd, since
it wεighs less because of buoyancy duε to convεction of air currεnts
40
common insoluble boys
Ag, Hg, Pb as well as BaS04, and CaC03
41
soluble boys
group IA metal (Alkali Metal) as well as NH4 or N03
42
in any nuc decay stuff, what stays the same?
the atomic mass!
43
butane is not just c4, its also
c4h10!!!!!
44
review voltsic galvanic shit
plz
45
practice using PV=nRT
PLZ
46
PO4 charge
-3
47
be careful with converting units!!
k and c
48
don't be stupid with pH and pOH calculation
plz
49
photoelectric effect
the quantification of energy thing
50
go back through qns 90-120
plz
51
don't get fooled when doing colligative properties with i
c2h5OH is still 1!!
52
molality calculation
MOLES SOLUTE/ KG solvent!!!
53
hydrate process
find moles of product, and moles water, then do RATIo like empirical formula
54
0 order reaction slope
IS NEGATIVE K
55
CN-, F-, NH4+ in water pH
are BASES U STUPIF
56
HF is a... at room temp
GAS
57
Homolysis
produces a radical pair
58
mol bractket in electroplating
mole metal/ mole E- used to make it ** split apart the ion, and then find the charge. this is e
59
e cell at eq is
zero
60
heat of combustion using H
Products- reactants
61
when is nernst eq used
adding something, and seeing how E changes!!
62
nernst equation
E=Ecell-0.06/n(LogQ)
63
-dH and +d.S are presεnt
a rεaction will proceed spontanεously at all tεlnperatures ，
64
dH is + and dS is -,
it will not be spontι neous undεr any tempεrature
65
+H and +S
spontaneous only at high temp
66
-H and -S
spontaneous only at low temp
67
be careful with final-initial for gases!
its not big-small #!
68
burets are only used for
titrations!!!
69
read the stupid qn
please
70
when doing redox
only balance the atoms, don't balance OH and H2O as well!!!! Be careful when copying down the coefficients too!!
71
covalent bonds are not
IMF!
72
catalyst and rate constant
INCREASES THE RATE CONSTANT
73
PAY ATTENTION TO QN
please

DAT Destroyer review (4 decks)

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