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Change in Enthalpy of Vaporization Formula

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Change in Enthalpy of Vaporization is the amount of energy (enthalpy) that must be added to a liquid substance to transform a quantity of that substance into a gas. Check FAQs

∆H vap = H vapor - H liquid

∆H_vap - Change in Enthalpy of Vaporization?H_vapor - Enthalpy of gas state?H_liquid - Enthalpy of liquid state?

Change in Enthalpy of Vaporization Example

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Here is how the Change in Enthalpy of Vaporization equation looks like with Values.

Here is how the Change in Enthalpy of Vaporization equation looks like with Units.

Here is how the Change in Enthalpy of Vaporization equation looks like.

1000 = 2000 - 1000

1000KJ/mol = 2000KJ/mol - 1000KJ/mol

1000 = 2000 - 1000

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Change in Enthalpy of Vaporization Solution

Follow our step by step solution on how to calculate Change in Enthalpy of Vaporization?

FIRST Step Consider the formula

∆H vap = H vapor - H liquid

Next Step Substitute values of Variables

∴

∆H vap = 2000KJ/mol - 1000KJ/mol

Next Step Convert Units

∴

∆H vap = 2E+6J/mol - 1E+6J/mol

Next Step Prepare to Evaluate

∴

∆H vap = 2E+6 - 1E+6

Next Step Evaluate

∴

∆H vap = 1000000J/mol

LAST Step Convert to Output's Unit

∴

∆H vap = 1000KJ/mol

Change in Enthalpy of Vaporization Formula Elements

Variables

Change in Enthalpy of Vaporization

Change in Enthalpy of Vaporization is the amount of energy (enthalpy) that must be added to a liquid substance to transform a quantity of that substance into a gas.

Symbol: ∆H_vap

Measurement: Energy Per MoleUnit: KJ/mol

Note: Value can be positive or negative.

Formulas to find Change in Enthalpy of Vaporization

Enthalpy of gas state

Enthalpy of gas state is the enthalpy or heat of a compound or element in gaseous state.

Symbol: H_vapor

Measurement: Energy Per MoleUnit: KJ/mol

Note: Value can be positive or negative.

Formulas to find Enthalpy of gas state

Enthalpy of liquid state

Enthalpy of liquid state is the enthalpy or heat of a compound or element in liquid state.

Symbol: H_liquid

Measurement: Energy Per MoleUnit: KJ/mol

Note: Value can be positive or negative.

Formulas to find Enthalpy of liquid state

Other formulas in Thermochemistry category

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Go Specific Heat Capacity in Thermochemical Equation

c = \frac{q}{Mass flight path \cdot ∆T}

Go Change in Internal Energy of Thermochemical System

ΔU = E final - E initial

Go Heat Capacity in Calorimetry

C = \frac{Q}{Δθ}

How to Evaluate Change in Enthalpy of Vaporization?

Change in Enthalpy of Vaporization evaluator uses Change in Enthalpy of Vaporization = Enthalpy of gas state-Enthalpy of liquid state to evaluate the Change in Enthalpy of Vaporization, The Change in Enthalpy of Vaporization, also known as the (latent) heat of vaporization or heat of evaporation, is the amount of energy (enthalpy) that must be added to a liquid substance to transform a quantity of that substance into a gas. Change in Enthalpy of Vaporization is denoted by ∆H_vap symbol.

How to evaluate Change in Enthalpy of Vaporization using this online evaluator? To use this online evaluator for Change in Enthalpy of Vaporization, enter Enthalpy of gas state (H_vapor) & Enthalpy of liquid state (H_liquid) and hit the calculate button.

FAQs on Change in Enthalpy of Vaporization

What is the formula to find Change in Enthalpy of Vaporization?

The formula of Change in Enthalpy of Vaporization is expressed as Change in Enthalpy of Vaporization = Enthalpy of gas state-Enthalpy of liquid state. Here is an example- 1 = 2000000-1000000.

How to calculate Change in Enthalpy of Vaporization?

With Enthalpy of gas state (H_vapor) & Enthalpy of liquid state (H_liquid) we can find Change in Enthalpy of Vaporization using the formula - Change in Enthalpy of Vaporization = Enthalpy of gas state-Enthalpy of liquid state.

Can the Change in Enthalpy of Vaporization be negative?

Yes, the Change in Enthalpy of Vaporization, measured in Energy Per Mole can be negative.

Which unit is used to measure Change in Enthalpy of Vaporization?

Change in Enthalpy of Vaporization is usually measured using the KiloJoule Per Mole[KJ/mol] for Energy Per Mole. Joule Per Mole[KJ/mol], Kilocalorie Per Mole[KJ/mol] are the few other units in which Change in Enthalpy of Vaporization can be measured.

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Change in Enthalpy of Vaporization Formula

Change in Enthalpy of Vaporization Example

Change in Enthalpy of Vaporization Solution

Change in Enthalpy of Vaporization Formula Elements

Other formulas in Thermochemistry category

How to Evaluate Change in Enthalpy of Vaporization?

FAQs on Change in Enthalpy of Vaporization

Variable Name