If you want to know the definition of enthalpy change
You have to know the meaning of all enthalpy changes first.
The definition of enthalpy is the heat of matter.
There are enthalpy of formation, enthalpy of combustion and enthalpy of solution.
The reactant that generates enthalpy must be a simple substance.
In the end, its product has only one molar value.
The reactant of combustion enthalpy is completely eliminated.
The amount of matter is still one mole.
I began to understand the enthalpy of solution.
The reactant is an ionic compound
Are dissolved in water.
One mole
The enthalpy of solution can be exothermic or endothermic.
Dissolve in a liquid
I am willing to recognize exothermic and endothermic.
Reaction enthalpy, hydration enthalpy and neutralization enthalpy.
Is the calculation of reaction enthalpy to be understood?
If the molar value of the reactant is greater than one
I'm just waiting for you to multiply the enthalpy change by a number
The reactant of hydration enthalpy is gas ion.
It is generally dissolved in water and liquid.
The enthalpy of hydration is as exothermic as the enthalpy of combustion.
Ions are definitely not a substance.
The enthalpy of neutralization is the reaction between acid and base.
Remember the acid and base clearly
Hydrogen ions are acidic substances.
hydroxyl
With it, it becomes basic
The enthalpy of neutralization is exothermic
Not endothermic in the enthalpy of hydration and neutralization.
Enthalpy of atomization is the formation of gas.
Only a single atom
After the product is formed, it is
One mole
Because it is normal temperature and pressure.
It is also the state of elements.
Enthalpy reaction under standard conditions
Enthalpy reaction under standard conditions
[00:12.120]If you want to know the definition of enthalpy change
[00:14.610]You have to know the meaning of all enthalpy changes first.
[00:17.430]The definition of enthalpy is the heat of matter.
[00:20.310]There are enthalpy of formation, enthalpy of combustion and enthalpy of solution.
[00:23.430]The reactant that generates enthalpy must be a simple substance.
[00:25.830]In the end, its product has only one molar value.
[00:28.800]The reactant of combustion enthalpy is completely eliminated.
[00:31.590]The amount of matter is still one mole.
[00:33.720]I began to understand the enthalpy of solution.
[00:37.320]The reactant is an ionic compound
[00:39.540]Are dissolved in water.
[00:42.450]One mole
[00:44.910]The enthalpy of solution can be exothermic or endothermic.
[00:48.780]Dissolve in a liquid
[00:51.600]I am willing to recognize exothermic and endothermic.
[01:20.490]Reaction enthalpy, hydration enthalpy and neutralization enthalpy.
[01:22.890]Is the calculation of reaction enthalpy to be understood?
[01:25.860]If the molar value of the reactant is greater than one
[01:28.650]I'm just waiting for you to multiply the enthalpy change by a number
[01:31.620]The reactant of hydration enthalpy is gas ion.
[01:34.380]It is generally dissolved in water and liquid.
[01:37.170]The enthalpy of hydration is as exothermic as the enthalpy of combustion.
[01:40.140]Ions are definitely not a substance.
[01:42.210]The enthalpy of neutralization is the reaction between acid and base.
[01:45.780]Remember the acid and base clearly
[01:48.030]Hydrogen ions are acidic substances.
[01:50.880]hydroxyl
[01:53.670]With it, it becomes basic
[01:57.300]The enthalpy of neutralization is exothermic
[02:00.150]Not endothermic in the enthalpy of hydration and neutralization.
[02:05.220]Enthalpy of atomization is the formation of gas.
[02:08.790]Only a single atom
[02:10.950]After the product is formed, it is
[02:13.860]One mole
[02:16.650]Because it is normal temperature and pressure.
[02:20.190]It is also the state of elements.
[02:23.100]Enthalpy reaction under standard conditions
[02:28.950]Enthalpy reaction under standard conditions