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classify the following phase changes by the signs of the system\'s δh and δs.: Solid to liquid - ∆H &∆S are +ve Solid to gas - both are +ve Liquid to gas - both are +v…
classify the following phase changes by the signs of the system\'s δh and δs.: Solid to liquid - ∆H &∆S are +ve Solid to gas - both are +ve Liquid to gas - both are +v…
The phase changes from solid to liquid, solid to gas, and liquid to gas are all characterized by positive values for both ΔH and ΔS. These processes involve anabsorption of heatand an increase in the randomness of the particles.1. Solid to liquid:- ΔH is positive (+ve)- ΔS is positive (+ve)2. Solid to gas:- ΔH is positive (+ve)- ΔS is positive (+ve)3. Liquid to gas:- ΔH is positive (+ve)- ΔS is positive (+ve)To classify the phase changes based on the signs of the system's ΔH (change in enthalpy) and ΔS (change in entropy), we need to consider the following:1. Solid to liquid:- ΔH is positive (+ve)- ΔS is positive (+ve)This means that during the phase change from solid to liquid, the system absorbs heat (endothermic process) and there is an increase in the randomness or disorder of the particles. An example of this phase change is ice melting to form liquid water.2. Solid to gas:- ΔH is positive (+ve)- ΔS is positive (+ve)During the phase change from solid to gas, the system absorbs heat and there is an increase in the randomness or disorder of the particles. This process is alsoendothermic. An example is dry ice (solid carbon dioxide) subliming to form gaseous carbon dioxide without going through the liquid phase.3. Liquid to gas:- ΔH is positive (+ve)- ΔS is positive (+ve)When a liquid changes to a gas, the system absorbs heat and there is an increase in the randomness or disorder of the particles. This phase change is also endothermic. An example is water boiling to form water vapor.In summary, the phase changes from solid to liquid, solid to gas, and liquid to gas are all characterized by positive values for both ΔH and ΔS. These processes involve anabsorption of heatand an increase in the randomness of the particles.Learn more aboutchange in entropy:brainly.com/question/30255350#SPJ11...