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Chapter 2

热力学和化学动力学

化学反应
化学反应
A balanced chemical equation provides the information of chemical formulas of the reactants and products involved in the chemical change. A ...
反应的焓和热
反应的焓和热
Combustion, commonly known as burning, is a reaction in which a substance reacts with an oxidizing agent, which in most cases is molecular oxygen, to ...
溶液形成的能量学
溶液形成的能量学
The formation of a solution is an example of a spontaneous process, which is a process that occurs under specified conditions without energy from some ...
熵和溶剂化
熵和溶剂化
The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for ...
吉布斯自由能和热力学有利性
吉布斯自由能和热力学有利性
The spontaneity of a process depends upon the temperature of the system. Phase transitions, for example, will proceed spontaneously in one direction or ...
化学和溶解度平衡
化学和溶解度平衡
The free energy change associated with dissolving a solute in a liter of solvent is called the free energy of a solution, ΔGsolution. The overall ...
速率法和反应阶数
速率法和反应阶数
The rate of a reaction is affected by the concentrations of reactants. Rate laws (differential rate laws) or rate equations are mathematical expressions ...
温度变化对反应速率的影响
温度变化对反应速率的影响
The Arrhenius equation, relates the activation energy and the rate constant, k, for many chemical reactions. In this equation, R is the ideal gas ...
多步反应
多步反应
Chemical reactions often occur in a stepwise fashion involving two or more distinct reactions taking place in a sequence. A balanced equation indicates ...
键解离能和活化能
键解离能和活化能
Bond energy is the energy required to break a bond homolytically. These values are usually expressed in units of kcal/mol or kJ/mol and are referred to as ...
能量图、过渡态和中间体
能量图、过渡态和中间体
Free-energy diagrams, or reaction coordinate diagrams, are graphs showing the energy changes that occur during a chemical reaction. The reaction ...
预测反应结果
预测反应结果
Kinetics describes the rate and path by which a reaction occurs. In contrast, thermodynamics deals with state functions and describes the properties, ...
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