化学
氢氧化物
水溶液
水解
氯化物
无机化学
离子
动能
氢氧化钠
酶水解
核化学
物理化学
有机化学
物理
量子力学
作者
Erik J. Pedersen,Benito J. Mariñas
出处
期刊:Water Research
[Elsevier]
日期:2001-02-01
卷期号:35 (3): 643-648
被引量:6
标识
DOI:10.1016/s0043-1354(00)00321-3
摘要
The hydrolysis of cyanogen chloride (ClCN) was studied as a function of temperature and pH. Results were used to resolve discrepancies among previously reported kinetic constants. The pH dependence was studied over a range of 9.54–10.93 at a temperature of 21.0°C. The effect of temperature was investigated over the range of 10–30°C at a pH of approximately 10. Changes in the concentrations of ClCN and the reaction products cyanic acid and chloride ion were monitored with time. For the conditions corresponding to these experiments, the hydroxide-assisted hydrolysis pathway predominated. Collision frequency factor and activation energies recommended to represent the hydrolysis of ClCN in aqueous solution are A=2.06×1011 M−1 s−1 and Ea=60,980 J mol−1 for the hydroxide-ion-assisted reaction, and A=9.97×108 s−1 and Ea=87,180 J mol−1 for the water-assisted reaction.
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