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Exam 3
Chem 102 Exam 3
39
Chemistry
Undergraduate 2
04/29/2011

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Term
first order rate law for nuclear decay
Definition
ln (Nt/No)
Term
192Hg undergoing electron capture decay
Definition
19280Hg + 0-1e -> 19279Au
Term
226Ra undergoing alpha decay
Definition
22688Ra -> 22286Rn + 42He
Term
tritium and deuterium undergoing fusion to produce an alpha particle and a neutron
Definition
31H + 21H -> 42He
Term
110In undergoing positron emission
Definition
11049In -> 110Cd + 01n
Term
63Ni undergoing beta decay
Definition
63Ni -> 6329Cu + 0-1e
Term
delta G=
Definition
nFE
Term
Q (pressure) or K (equilibrium) =
Definition
products/ reactants
Term
spontaneous
Definition
less order
Term
melting of a solid is ______ above it's melting point and ________ below it's melting point
Definition
spontaneous, nonspontaneous
Term
2 gas -> 3 gas, entropy?
Definition
delta S positive, entropy increases
Term
solid melts, S?
Definition
increases
Term
gas liquifies, S?
Definition
decreases
Term
t increases, s?
Definition
increases
Term
does a g or a s have higher S?
Definition
gas
Term
higher pressure, s?
Definition
higher
Term
into more solution, S?
Definition
increases
Term
delta G =
Definition
delta H - T delta S
Term
delta G is positive
Definition
process is nonspontaneous
Term
delta G with R
Definition
-RT ln K
Term
x + O2 -> y, delta G sign?
x -> y + O2, delta G sign?
Definition
-, +
Term
E knot positive in voltaic cells
Definition
spontaneous
Term
oxidation number up
Definition
oxidation
Term
anode is
Definition
oxidized
Term
Eknot cell
Definition
Eknot red (cathode)- Eknot red (anode)
Term
E=
Definition
Eknot - (o.o592V/n) log Q
Term
Q in voltaic cell
Definition
lower concentration/ higher = anode/cathode
Term
Gray
Definition
absorbed dose, 1 J radiation/ kg of tissue, Rad
Term
Sievert
Definition
(Sv), effective dose, 1 Gy x RBE (relative biological effectiveness
Term
fusion
Definition
requires high temps, pushes 2 positively charged particles together
Term
t1/2=
Definition
0.693/k
Term
A =
Definition
kN
Term
A is
Definition
# of disintegrations per unit time
Term
k is
Definition
decay constant
Term
N is
Definition
number of radioactive nuclei
Term
delta S univ=
Definition
delta S sys + delta Ssurr
Term
balancing redox steps
Definition
determine half reactions, balance according to mass (without H and O, then with H and O), balance according to charge, make electrons cancel, verify results
Term
H and O in acidic
Definition
O by adding H2O, H by adding H+
Term
H and O in basic
Definition
H by adding H+, neutralize H+ by adding OH-, convert H+ and OH to H2O
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