Unit 3 Flashcards
1
Q
Always soluble
A
Li+ (Lithium) Na+ (Sodium) K+ (Potassium) Rb+ (Rubidium) Cs+ (Cesium) NH4 + (Ammonium) NO3 - (Nitrate) ClO3 - (Chlorate) ClO4 - (Perchlorate) CH3COO- (Acetate)
2
Q
Never soluble
A
(Except Group 1 and NH4 +)
PO4 3- (Phosphate)
CO3 2- (Carbonate)
SO3 2- (Sulfite)
3
Q
Usually insoluble
A
(Except Group 1 and NH4 + and some Group 2)
OH-
S 2-
4
Q
When in doubt, _ compounds are usually insoluble.
A
Ag, Hg, and Pb
5
Q
AB chemical formula
A
Ksp = x^2
Common ion Ksp = [A][B]
6
Q
AB2 chemical formula
A
Ksp = 4(x^3)
Common ion Ksp = [A][B]^2
7
Q
AB3 chemical formula
A
Ksp = 27(x^4)
Common ion Ksp = [A][B]^3
8
Q
A3B2 chemical formula
A
Ksp = 108(x^5)
Common ion Ksp = [A]^3[B]^2
9
Q
Zero Order Half-life
A
t1/2 = [A]0 / 2k
⬇️[A], ⬇️t1/2
10
Q
First Order Half-life
A
t1/2 = ln2 / k
⬇️[A], t1/2 constant
11
Q
Second Order Half-life
A
t1/2 = 1 / k[A]0
⬇️[A], ⬆️t1/2
12
Q
0th Order units of k
A
M/s
13
Q
1st Order units of k
A
1/s
14
Q
2nd Order units of k
A
1 / (M*s)
15
Q
Arrhenius Law
A
k = Ae^-(Ea/RT) R = 8.314 J/mol•k = 0.008314 kJ/mol•K T in units Kelvin Ea = J/mol ln(k2/k1) = (Ea/R)(1/T1 - 1/T2)
