Ka for some common weak acids:
HCOOH  (formic)
1.76 x 10-4
    
HClO  (hypochlorous) 3.7 x 10-8
CH3COOH  (acetic)
1.75 x 10-5

HNO2  (nitrous)
4.0 x 10-4
C2H5COOH  (propionic)
1.34 x 10-5

H2SO3   (sulfurous #1)
1.7 x 10-2
C6H5COOH   (benzoic)
6.30 x 10-5

HSO3-  (sulfurous #2) 6.24 x 10-8
H2CO3  (carbonic #1)
4.31 x 10-7

HSO4-  (sulfuric #2) 2.0 x 10-2
HCO3-  (carbonic #2) 4.4 x 10-11

H3PO4  (phosphoric #1)
1.1 x 10-2
H3PO3  (phosphorous #1) 7.0 x 10-3

H2PO4-  (phosphoric #2) 7.5 x 10-8
H2PO3-  (phosphorous #2) 2.0 x 10-5
     
HPO42-  (phosphoric #3) 4.8 x 10-12
HCN  (hydrocyanic )
7.2 x 10-10
     
HF  (hydrofluoric ) 6.3 x 10-4
HIO  (hypoiodous) 2.3 x 10-11
     
HBrO  (hypobromous) 2.06 x 10-9
HOOCCOOH (oxalic #1) 6.5 x 10-2      
HOOCCH2COOH (Malonic #1) 1.397 x 10-3
HOOCCOO- (oxalic #2) 6.1 x 10-5      
HOOCCH2COO- (Malonic #2) 2.1 x 10-5
Kb for some common weak soluble bases:
NH3  (ammonia 20oC)
1.710 x 10-5
     
C6H5NH2   (analine) 4.2 x 10-10
CH3NH2   (methylamine)
4.4 × 10–4

C5H5N   (pyridine)
1.9 x 10-9
(CH3)2NH  (dimethylamine)
5.0 x 10-4

H2NNH2   (hydrazine #1)
1.2 x 10-6
(CH3)3N  (trimethylamine) 6.3 x 10-5

H2NNH3+   (hydrazine #2) 8.9 x 10-16
o-C6H4(OCH3)NH2  (o-anisidine) 3.1 x 10-10

CH3CH2NH2   (ethylamine) 4.67 x 10-4
m-C6H4(OCH3)NH2  (m-anisidine) 1.6 x 10-10

p-C6H4(OCH3)NH2  (p-anisidine) 1.9 x 10-9
Ksp for some common insoluble hydroxides:
Fe(OH)2
1.9 x 10-16
    
Zn(OH)2
1.8 x 10-14
Fe(OH)3
9.0 x 10-38

Mn(OH)2
4.0 x 10-14
Sn(OH)2
1.4 x 10-28

Al(OH)3
4.6 x 10-33
Sn(OH)4
1.0 x 10-56

Mg(OH)2
1.2 x 10-11
Ksp for some other common insoluble solids:
AgCl
1.56 x 10-10
 
Cu2S
2.0 x 10-47
BaCO3
8.1 x 10-9
 
Fe2S3
3.7 x 10-99
BaF2
1.7 x 10-6
 
MgF2 6.4 x 10-9
CaCO3 4.8 x 10-9
 
Pb(IO3)2 2.6 x 10-13
CaF2
3.95 x 10-11
 
SrF2
2.8 x 10-9
CaC2O4 2.57 x 10-9
 
ZnS
1.2 x 10-21