SRM 1655（氯化钾）在水中的溶解焓
The Enthalpy of Solution of SRM 1655 (KCl) in HO.
作者信息
Kilday Marthada V
机构信息
National Bureau of Standards, Washington, D.C. 20234.
出版信息
J Res Natl Bur Stand (1977). 1980 Nov-Dec;85(6):467-482. doi: 10.6028/jres.085.027.
The value for the enthalpy of solution of SRM 1655 (KCl), Δ°(500 HO, 298.15 K) = (235.86±0.23)J·g or (17.584±0.017)kJ·mol, was obtained from measurements in an adiabatic calorimeter, and confirmed by measurements in an isoperibol calorimeter. Enthalpy of solution measurements are reported in the temperature range 296 K to 358 K, at molalities between 0.005 and 0.18 mol-kg, for various ranges of particle size up to 1000 m, and in CO- saturated solutions. Observations were also made relative to the hygroscopicity, removal of occluded HO, and homogeneity of SRM 1655. Between 296 K and 303 K, Δ =-(2.076±0.087) J·g·Kor -(154.8±6.4) J·mol·K for the reaction of SRM 1655 in 500 HO.
SRM 1655（KCl）在500 HO、298.15 K时的溶解焓值，Δ°(500 HO, 298.15 K) = (235.86±0.23)J·g或(17.584±0.017)kJ·mol，是通过绝热热量计测量得到的，并经等压热量计测量证实。溶解焓的测量报告了在296 K至358 K的温度范围内，在0.005至0.18 mol-kg的质量摩尔浓度下，对于粒径高达1000 m的各种范围以及在CO饱和溶液中的情况。还对SRM 1655的吸湿性、去除吸附的HO以及均匀性进行了观察。在296 K至303 K之间，SRM 1655在500 HO中的反应的Δ =-(2.076±0.087) J·g·K或-(154.8±6.4) J·mol·K。
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