
Hydrogen sulfide - Wikipedia
It is slightly soluble in water and acts as a weak acid (p Ka = 6.9 in 0.01–0.1 mol/litre solutions at 18 °C), giving the hydrosulfide ion HS−. Hydrogen sulfide and its solutions are colorless. When exposed to air, it slowly oxidizes to form elemental sulfur, which is not soluble in water. The sulfide anion S2− is not formed in aqueous solution.
Appendix C: Dissociation Constants and pKa Values for Acids at 25°C
This is “Appendix C: Dissociation Constants and pKa Values for Acids at 25°C”, appendix 3 from the book Principles of General Chemistry (v. 1.0). For details on it (including licensing), click here .
Bordwell pKa Table - Organic Chemistry Data
2017年10月27日 · In short, the stronger the acid, the smaller the pKa value and strong acids have weak conjugate bases. pKa values describe the point where the acid is 50% dissociated (i.e. deprotonated). Below are tables that include determined pKa values for various acids as determined in water, DMSO and in the gas Phase.
硫化氢 - 百度百科
硫化氢(h2s)是一种无色有剧毒的酸性气体,是硫的氢化物中最简单的一种,属于无机化合物,高浓度时无明显气味,低浓度时具有强烈的臭鸡蛋味,浓度极低时便有硫磺味,是许多工业过程中的副产品,例如在天然气提炼、石油炼制、废水处理和造纸工业中 ...
Table of Acids with Ka and pKa Values* CLAS * Compiled from Appendix 5 Chem 1A, B, C Lab Manual and Zumdahl 6th Ed. The pKa values for organic acids can be found in Appendix II of Bruice 5th Ed.
硫化氢 CAS#: 7783-06-4 - ChemicalBook
硫化氢是硫的氢化物,化学式为h2s。一种无色、有恶臭味(臭鸡蛋味)的剧毒气体。能溶于水和乙醇,比重为1.1906。熔点-85.5°c,沸点-60.4°c,临界温度100.4°c,临界压力90.06×105帕。
硫化氢 - 维基百科,自由的百科全书
硫化氢 是 无机化合物, 化学式 为 H2S。 正常是无色、 易燃 的 酸性 气体,也是一种 氧族元素的氢化物。 硫化氢是 急性剧毒 物质,具有臭鸡蛋味,吸入少量高浓度硫化氢可于短时间内致命。 低浓度的硫化氢对 眼 、 呼吸系统 及 中枢神经 都有影响。 它有毒,有腐蚀性,还可以被燃烧。 [9] 硫化氢通常由 有机物 在无 氧气 的 原核生物 分解的情况下产生,例如在 沼泽 和下水道中;此过程通常称为 厌氧消化,该过程通过 还原硫酸盐的微生物 (英语:Sulfate-reducing …
Hydrogen Sulfide | H2S | CID 402 - PubChem
Hydrogen Sulfide | H2S | CID 402 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
E5: Acid Dissociation Constants of Organics - Chemistry LibreTexts
2024年6月16日 · To find the Kb value for a conjugate weak base, recall that. Ka ×Kb = Kw K a × K b = K w. for a conjugate weak acid, HA, and its conjugate weak base, A –.
最常用酸碱PKa--PKb表 - 百度文库
最常用酸碱PKa--PKb表-高中化学,判断酸性、碱性比较难,本文是判断常见酸碱性的PKa、PKb简表。 简单适用,方便理解,容易记忆。 对于高三化学学习,是离不开的拐棍儿。
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