ALevel化学中各种enthalpychange

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在生物化学变动中，他们用enthalpy change(焓变)则表示energy(热量)变动，牵涉到的enthalpy change类型多样...

enthalpy change of formation;

enthalpy change of combustion;

enthalpy change of neutralisation;

enthalpy change of solution;

enthalpy change of atomisation,

enthalpy change of hydration之类

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那时他们来具体内容阐释呵呵这“各式各样”enthalpy change，在认知的基础上会更快梦境哦!

01

Enthalpy change

The energy exchange between a chemical reaction and its surroundings at constant pressure.

Enthalpy change，指的是某生物化学变动在某一的理想气体下与周遭间的热量互换，一般来说用ΔH来则表示。

02

Standard condition

Each substance involved in the reaction is in its normal physical state (solid, liquid or gas) at 100kPa and 298K.

一般来说他们科学研究的enthalpy change是指化学物质在国际标准前提(100kPa和298K)下的恒定力学状况，用“Image”那个记号来则表示。

03

The first ionisation energy

The amount of energy required to remove one electron from each atom in one mole of atoms of the element in the gaseous state (to form gaseous 1+ ions).

认知第三结合能，很大是两个液态氢原子丧失两个电子零件稀释的热量。丧失电子零件后那个液态氢原子大自然变为了正阳离子。

04

The first electron affinity

The first electron affinity, is the enthalpy change when 1 mole of electrons is added to 1 mole of gaseous atoms to form 1 mole of gaseous 1– ions under standard conditions.

electron affinity指的是两个液态氢原子获得两个电子零件相关联的热量变动，获得电子零件后大自然带正电。

05

Lattice energy

Lattice energy is the enthalpy change when 1 mole of an ionic compound is formed from its gaseous ions under standard conditions.

认知lattice energy的关键性是要从液态阳离子聚合1mol的阳离子氧化物相关联的热量变动。

06

The standard enthalpy change of formation

The enthalpy change when one mole of a compound is formed from its elements under standard conditions.

关键性：从element(碱金属)聚合1mol氧化物相关联的热量变动。

07

The standard enthalpy change of atomisation

The enthalpy change when one mole of gaseous atoms is formed from the element in its standard state under standard conditions.

关键性：从element(碱金属)聚合1mol液态氢原子相关联的热量变动。