![]() ![]() Using the 'downhill' analogy again, when water flows downhill, the driving force is gravity. Mathematically, we can simply write the zeroth law of thermodynamics as \If \, T1 T2 \, and \, T1 T3, \, then \, T2 T3.\ This is the most fundamental way of defining temperature: Two objects must be at the same temperature thermodynamically if the net heat transfer between them is zero when they are put in thermal contact and have reached a thermal equilibrium. Skillful use of tables and property diagrams is prerequisite for the effective use of software to retrieve thermodynamic. The first law of thermodynamics is stated as follows: First Law of Thermodynamics Associated with every equilibrium state of a system is its internal energy Eint. ![]() When talking about exergonic, or 'downhill' reactions, chemists sometimes use the term 'driving force' to describe the chemical factor or factors that drive the reaction from higher energy reactant to lower energy product. Interactive Thermodynamics (IT) software is a highly-valuable learning tool that allows students to develop engineering models, perform 'what-if' analyses, and examine principles in more detail to enhance their learning. ![]()
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