第６章
熱化学
無料サンプル
Free access at this time
エネルギーの基礎
Chemical reactions, such as those that occur when you light a match, involve changes in energy as well as matter.
Chemical changes and their accompanying ...
無料サンプル
Free access at this time
熱力学の第一法則
Energy Conservation
Energy can be converted from one form into another, but all of the energy present before a change occurs always exists in some form ...
無料サンプル
Free access at this time
内部エネルギー
The total of all possible kinds of energy present in a substance is called the internal energy (U), sometimes symbolized as E. Suppose a system with ...
無料サンプル
Free access at this time
熱の定量化
Thermal Energy
Microscopically, thermal energy is the kinetic energy associated with the random motion of atoms and molecules. Temperature is a ...
無料サンプル
Free access at this time
運動の定量化
As a system undergoes a change, its internal energy can change, and energy can be transferred from the system to the surroundings, or from the ...
無料サンプル
Free access at this time
エンタルピー
Chemists ordinarily use a property known as enthalpy (H) to describe the thermodynamics of chemical and physical processes. Enthalpy is defined as the sum ...
無料サンプル
Free access at this time
熱化学方程式
For a chemical reaction (the system) carried out at constant pressure – with the only work done caused by expansion or contraction – the ...
無料サンプル
Free access at this time
一定圧力の熱量測定
Calorimetry is a technique used to measure the amount of heat involved in a chemical or physical process or to measure the heat transferred to or from a ...
無料サンプル
Free access at this time
一定体積の熱量測定
Calorimeters are useful to determine the heat released or absorbed by a chemical reaction. Coffee cup calorimeters are designed to operate at constant ...
無料サンプル
Free access at this time
ヘスの法則
There are two ways to determine the amount of heat involved in a chemical change: measure it experimentally, or calculate it from other experimentally ...
無料サンプル
Free access at this time
標準生成エンタルピー
Enthalpy changes are typically tabulated for reactions in which both the reactants and products are at the same conditions. A standard state is a commonly ...
無料サンプル
Free access at this time
反応エンタルピー
Hess’s law can be used to determine the enthalpy change of any reaction if the corresponding enthalpies of formation of the reactants and products ...
Copyright © 2023 MyJoVE Corporation. All rights reserved