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英国诺桑比亚大学论文代写:氯化钙

英国诺桑比亚大学论文代写



英国诺桑比亚大学论文代写:氯化钙


氯化钙CaCl2是一种非常通用的化学品,也是一种非常基本的化学品,可用作稀释的固体形式,也可用作浓度(DOW,2014)。就其化学成分而言,它更类似于氯化钠NaCl。它通常被称为岩盐。氯化钙的多种用途源于其三种化学性质。主要是氯化钙是吸湿的。氯化钙的吸湿性使其更容易从周围环境吸收水分。在此,它与氯化钠,氢氧化钠和氯化锌共享特性。该性质赋予氯化钙许多实际应用。固体氯化钙的另一个性质是它易潮解(Seddon等,2000)。潮解是一种物质从周围大气中吸收水分的过程。在吸收中,它会溶解然后成为溶液。发生潮解的原因是因为与空气中存在的水蒸气的压力相比,溶液的蒸气压将更小。当空气充足潮湿,携带水分时,它就会潮湿(Russell,&Ming,2002)。但是,由于氯化钙也具有吸湿性,因此不会将空气中的水蒸气吸收到溶解点。它只是转化为液态盐水形式(Schlegel,&Schönherr,2001)。第三个最重要的属性是其热效应。当固体氯化钙溶解在水中时会通过引起放热反应而释放热量。



英国诺桑比亚大学论文代写:氯化钙


Calcium chloride CaCl2is a very versatile chemical and is also a very basic chemical that is used as diluted solid forms and also as concentrations (DOW, 2014). In terms of its chemical composition it is more similar to Sodium Chloride NaCl. It is called commonly as the rock salt. The versatile use of Calcium chloride stems from three of its chemical properties. Primarily Calcium chloride is hygroscopic. The hygroscopic nature of calcium chloride makes it easier for it to attract moisture from the surroundings. In this it shares properties with Sodium chloride, Sodium Hydroxide and Zinc chloride. This property gives Calcium chloride many practical applications. Another nature of solid calcium chloride is that it is deliquescent (Seddon et al, 2000). Deliquescence is a process where the substance will absorb moisture from the surrounding atmosphere. In absorption, it will dissolve and then become a solution. The reason that deliquescence occurs is because the vapor pressure of the solution will be less compared to the pressure of the water vapor present in the air. When the air is sufficiently humid, carrying moisture, then it will deliquesce (Russell, & Ming, 2002). However, since calcium chloride is also hygroscopic, it does not absorb the water vapor in the air to the point of dissolution; it merely converts to a liquid brine form (Schlegel, & Schönherr, 2001). The third most important property is that of its thermal effects. Solid calcium chloride when it is dissolved in water will release heat by causing an exothermic reaction.




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