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水、弱酸和弱碱的电离小结 SUMMARY 2.1 Ionization of Water,Weak Acids, and Weak Bases > 纯水轻微电离,形成等量的氢离子(水合氢离子,H3O+)和氢氧根离子。 > 电离程度用平衡常数(Keq)来描述,水的离子积Kw就是由它推导出来的。25°C时,Kw= [H+] [OH−] = (55.5 M)(Keq) = 10−14 M2 > 水溶液...
水的浓度([H2O])是不会在系数中显示的。离解的化学反应为:HA+H2O≒A-+H3O+。 pKa值会影响一物质的特征,例如活跃性、水溶性及光谱性质。在生物化学上,蛋白质及氨基酸侧链的pKa值是对酶的活跃性及蛋白质的稳定性十分重要。 Pka酸度系数 酸度系数,又名酸离解常数,代号Ka值,在化学及生物化学中,是指一个特定...
H2O（aq）+ H2O(l)⇆H3O+ （aq） + OH-（aq）水的pKa=-lgc(H+)·c(OH-)/55.56= -l...
但质子论却认为H3O+解离出质子的平衡常数大概是-1.7，意思是H3O+(aq)↽−−⇀H2O(aq)+H+,...
Substrate H2O H3O H2S HBr HCl HF HOCl HClO4 HCN HN3 HSCN H2SO3 H2SO4 H3PO4 HNO3 HNO2 H2CrO4 CH3SO3H CF3SO3H NH4Cl B(OH)3 HOOH + pKa's of Inorganic and Oxo-Acids Substrate O X OH Chem 206 Substrate pKa H2O (DMSO) pKa H2O (DMSO) 15.7 -1.7 7.00 -9.00 (0.9) -8.0 3.17 ...
有机分子pKa列表
Which is the correct order of the pKa values? (H2O > HO^- > H3O+ implies that H2O has the highest pKa value and H3O+ has the lowest pKa value). 1) Four acids have pK_a values of 5, 10, 15, and 20, respectively. The strongest acid is the one with a pK_a ...
Is H3O polar or nonpolar? How many electrons does dubnium have? What is the electron domain and molecular geometry of BrO_3^-? How many resonance structures are required in the electron-dot structure of CO32-? How does an atom become a positively charged ion? How does an ion differ from...
H3O++H2O⟶H2O+H3O+ 正常来讲上面这个“反应”平衡常数是1，pKa当然是0.也就是说即使代入55.5mol...