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(½üËÆÅ¨¶ÈO.O1¡«O.OO3mol¡¤L-1,ζÈ298K)
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»¯Ñ§Ê½
½âÀë³£Êý£¬K
pK
´×Ëá
HAc
1.76¡Á1O-5
4.75
̼Ëá
H2CO3  
K1=4.3O¡ÁlO£­7
6.37
K2=5.61¡Á1O£­11
1O.25
²ÝËá
H2C2O4  
K1=5.9O¡ÁlO-2
1.23
K2=6.4O¡ÁlO-5
4.19
ÑÇÏõËá
HNO2  
4.6¡Á1O£­4
(285.5K)
3.37
Á×Ëá
H3PO4   
K1=7.52¡ÁlO-3
2.12
K2=6.23¡Á1O£­8
7.21
K3=2.2¡ÁlO£­13
(291K)
12.67
ÑÇÁòËá
H2SO3
  
K1=1.54¡ÁlO-2 (291K)
1.81
K2=1.O2¡ÁlO-7
6.91
ÁòËá
H2SO4
K2=l.2O¡ÁlO£­2
1.92
Áò»¯Çâ
H2S  
K1=9.l¡ÁlO£­8 (291K)  
7.O4
K2=l.l¡Á1O-12
11.96
ÇâÇèËá
HCN
4.93¡Á1O£­1O
9.31
¸õËá
H2CrO4  
K1=1.8¡ÁlO-1
O.74
K2=3.2O¡Á1O-7
6.49
*ÅðËá
H3BO3
5.8¡Á1O-1O
9.24
Çâ·úËá
HF
3.53¡Á1O-4
3.45
¹ýÑõ»¯Çâ
H2O2
2.4¡Á1O-12
11.62
´ÎÂÈËá
HClO
2.95¡Á1O£­5 (291K)
4.53
´ÎäåËá
HBrO
2.O6¡Á1O-9
8.69
´ÎµâËá
HIO
2.3¡Á1O-11
1O.64
µâËá
HIO3
1.69¡Á1O£­1
O.77
ÉéËá
  
H3AsO4
   
K1=5.62¡ÁlO-3  (291K)
2.25
K2£½l.7O¡ÁlO£­7
6.77
K3=3.95¡Á1O£­12
11.4O
ÑÇÉéËá
HAsO2
6¡Á1O-1O
9.22
ï§Àë×Ó
NH4+
5.56¡Á1O-1O
9.25
°±Ë®
NH3¡¤H2O
1.79¡Á1O£­5
4.75
Áª°·
N2H4
8.91¡Á1O£­7
6.O5
ôǰ±
NH2OH
9.12¡Á1O-9
8.O4
ÇâÑõ»¯Ç¦
Pb(OH)2
9.6¡Á1O£­4
3.O2
ÇâÑõ»¯ï®
LiOH
6.31¡Á1O-1
O.2
ÇâÑõ»¯îë
Be(OH)2
1.78¡Á1O£­6
5.75
BeOH+
2.51¡Á1O£­9
8.6
ÇâÑõ»¯ÂÁ
A1(OH)3
5.O1¡Á1O-9
8.3

Al(OH)2+
1.99¡Á1O-1O
9.7
ÇâÑõ»¯Ð¿
Zn(OH)2
7.94¡Á1O-7
6.1
ÇâÑõ»¯ïÓ
Cd(OH)2
5.O1¡Á1O£­11
1O.3
*ÒÒ¶þ°·
H2NC2H4NH2  
K1=8.5¡ÁlO£­5
4.O7
K2=7.l¡ÁlO-8
7.15
*ÁùÑǼ׻ùËİ·
(CH2)6N4
1.35¡Á1O-9
8.87
*ÄòËØ
CO(NH2)2
1.3¡Á1O£­14
13.89
*ÖÊ×Ó»¯ÁùÑǼ׻ùËİ·
(CH2)6N4H+
7.1¡Á1O-6
5.15
¼×Ëá
HCOOH  
1.77¡Á1O-4 (293K)
3.75
ÂÈÒÒËá
ClCH2COOH
1.4O¡Á1O-3
2.85
°±»ùÒÒËá
NH2CH2COOH
1.67¡Á1O-1O
9.78
*ÁÚ±½¶þ¼×Ëá
C6H4(COOH)2
K1=1.12¡Á1O-3
2.95
K2=3.91¡Á1O-6
5.41
ÄûÃÊËá
(HOOCCH2)2C(OH)COOH      
K1=7.l¡Á1O-4
3.14
K2=1.68¡Á1O-5 (293K)
4.77
K3=4.1¡Á1O-7
6.39
a-¾ÆÊ¯Ëá  
(CH(OH)COOH)2  
K1=1.O4¡Á1O-3
2.98
K2=4.55¡Á1O-5
4.34
*8-ôÇ»ùà­ßø
C9H6NOH  
K1=8¡ÁlO-6
5.1
K2=1¡Á1O-9
9.O
±½·Ó
C6H5OH

1.28¡Á1O-1O (293K)
9.89
*¶Ô°±»ù±½»ÇËá
H2NC6H4SO3H  
Kl=2.6¡ÁlO-l
O.58
K2=7.6¡Á1O-4
3.12
*ÒÒ¶þ°·ËÄÒÒËá(EDTA)  
(CH2COOH)2NH+CH2CH2NH+(CH2COOH)2  
K5=5.4¡Á1O-7
6.27
K6=l.12¡Á1O-11
1O.95
Õª×ÔR.C.Weast,Handbook of Chemistry and Physics D- 165,7Oth. edition
,1989¡ª199O
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