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Molar Enthalpy of Vaporization given Boiling Point of Solvent Formula

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The Molar Enthalpy of Vaporization is the amount of energy needed to change one mole of a substance from the liquid phase to the gas phase at constant temperature and pressure. Check FAQs

ΔH vap = \frac{[R] \cdot ({T bp}^{2}) \cdot M solvent}{1000 \cdot k b}

ΔH_vap - Molar Enthalpy of Vaporization?T_bp - Solvent Boiling Point?M_solvent - Molar Mass of Solvent?k_b - Ebullioscopic Constant of Solvent?[R] - Universal gas constant?

Molar Enthalpy of Vaporization given Boiling Point of Solvent Example

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Here is how the Molar Enthalpy of Vaporization given Boiling Point of Solvent equation looks like with Values.

Here is how the Molar Enthalpy of Vaporization given Boiling Point of Solvent equation looks like with Units.

Here is how the Molar Enthalpy of Vaporization given Boiling Point of Solvent equation looks like.

1461.5266 = \frac{8.3145 \cdot (15^{2}) \cdot 400}{1000 \cdot 0.512}

1461.5266kJ/mol = \frac{8.3145 \cdot ({15K}^{2}) \cdot 400kg}{1000 \cdot 0.512K*kg/mol}

1461.5266 = \frac{8.3145 \cdot (15^{2}) \cdot 400}{1000 \cdot 0.512}

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Elevation in Boiling Point » fx Molar Enthalpy of Vaporization given Boiling Point of Solvent

Molar Enthalpy of Vaporization given Boiling Point of Solvent Solution

Follow our step by step solution on how to calculate Molar Enthalpy of Vaporization given Boiling Point of Solvent?

FIRST Step Consider the formula

ΔH vap = \frac{[R] \cdot ({T bp}^{2}) \cdot M solvent}{1000 \cdot k b}

Next Step Substitute values of Variables

∴

ΔH vap = \frac{[R] \cdot ({15K}^{2}) \cdot 400kg}{1000 \cdot 0.512K*kg/mol}

Next Step Substitute values of Constants

∴

ΔH vap = \frac{8.3145 \cdot ({15K}^{2}) \cdot 400kg}{1000 \cdot 0.512K*kg/mol}

Next Step Convert Units

∴

ΔH vap = \frac{8.3145 \cdot ({15K}^{2}) \cdot 400000g}{1000 \cdot 0.512K*kg/mol}

Next Step Prepare to Evaluate

∴

ΔH vap = \frac{8.3145 \cdot (15^{2}) \cdot 400000}{1000 \cdot 0.512}

Next Step Evaluate

∴

ΔH vap = 1461526.63209725J/mol

Next Step Convert to Output's Unit

∴

ΔH vap = 1461.52663209725kJ/mol

LAST Step Rounding Answer

∴

ΔH vap = 1461.5266kJ/mol

Molar Enthalpy of Vaporization given Boiling Point of Solvent Formula Elements

Variables

Constants

Molar Enthalpy of Vaporization

The Molar Enthalpy of Vaporization is the amount of energy needed to change one mole of a substance from the liquid phase to the gas phase at constant temperature and pressure.

Symbol: ΔH_vap

Measurement: Molar EnthalpyUnit: kJ/mol

Note: Value should be greater than 0.

Formulas to find Molar Enthalpy of Vaporization

Solvent Boiling Point

Solvent boiling point is the temperature at which the vapor pressure of the solvent equals the pressure surrounding and changes into a vapor.

Symbol: T_bp

Measurement: TemperatureUnit: K

Note: Value can be positive or negative.

Formulas to find Solvent Boiling Point

Molar Mass of Solvent

The Molar Mass of Solvent is the molar mass of the medium in which the solute is dissolved.

Symbol: M_solvent

Measurement: WeightUnit: kg

Note: Value can be positive or negative.

Formulas to find Molar Mass of Solvent

Ebullioscopic Constant of Solvent

The Ebullioscopic Constant of Solvent relates molality to boiling point elevation.

Symbol: k_b

Measurement: Cryoscopic ConstantUnit: K*kg/mol

Note: Value should be greater than 0.

Formulas to find Ebullioscopic Constant of Solvent

Universal gas constant

Universal gas constant is a fundamental physical constant that appears in the ideal gas law, relating the pressure, volume, and temperature of an ideal gas.

Symbol: [R]

Value: 8.31446261815324

Other formulas in Elevation in Boiling Point category

Go Elevation in Boiling Point of Solvent

ΔT b = k b \cdot m

Go Ebullioscopic Constant using Latent Heat of Vaporization

k b = \frac{[R] \cdot {T sbp}^{2}}{1000 \cdot L vaporization}

Go Ebullioscopic Constant using Molar Enthalpy of Vaporization

k b = \frac{[R] \cdot T bp \cdot T bp \cdot M solvent}{1000 \cdot ΔH vap}

Go Ebullioscopic Constant given Elevation in Boiling Point

k b = \frac{ΔT b}{i \cdot m}

How to Evaluate Molar Enthalpy of Vaporization given Boiling Point of Solvent?

Molar Enthalpy of Vaporization given Boiling Point of Solvent evaluator uses Molar Enthalpy of Vaporization = ([R]*(Solvent Boiling Point^2)*Molar Mass of Solvent)/(1000*Ebullioscopic Constant of Solvent) to evaluate the Molar Enthalpy of Vaporization, The Molar Enthalpy of Vaporization given Boiling Point of Solvent is the amount of energy needed to change one mole of a substance from the liquid phase to the gas phase at constant temperature and pressure. Molar Enthalpy of Vaporization is denoted by ΔH_vap symbol.

How to evaluate Molar Enthalpy of Vaporization given Boiling Point of Solvent using this online evaluator? To use this online evaluator for Molar Enthalpy of Vaporization given Boiling Point of Solvent, enter Solvent Boiling Point (T_bp), Molar Mass of Solvent (M_solvent) & Ebullioscopic Constant of Solvent (k_b) and hit the calculate button.

FAQs on Molar Enthalpy of Vaporization given Boiling Point of Solvent

What is the formula to find Molar Enthalpy of Vaporization given Boiling Point of Solvent?

The formula of Molar Enthalpy of Vaporization given Boiling Point of Solvent is expressed as Molar Enthalpy of Vaporization = ([R]*(Solvent Boiling Point^2)*Molar Mass of Solvent)/(1000*Ebullioscopic Constant of Solvent). Here is an example- 1.461527 = ([R]*(15^2)*400)/(1000*0.512).

How to calculate Molar Enthalpy of Vaporization given Boiling Point of Solvent?

With Solvent Boiling Point (T_bp), Molar Mass of Solvent (M_solvent) & Ebullioscopic Constant of Solvent (k_b) we can find Molar Enthalpy of Vaporization given Boiling Point of Solvent using the formula - Molar Enthalpy of Vaporization = ([R]*(Solvent Boiling Point^2)*Molar Mass of Solvent)/(1000*Ebullioscopic Constant of Solvent). This formula also uses Universal gas constant .

Can the Molar Enthalpy of Vaporization given Boiling Point of Solvent be negative?

No, the Molar Enthalpy of Vaporization given Boiling Point of Solvent, measured in Molar Enthalpy cannot be negative.

Which unit is used to measure Molar Enthalpy of Vaporization given Boiling Point of Solvent?

Molar Enthalpy of Vaporization given Boiling Point of Solvent is usually measured using the Kilojoule per Mole[kJ/mol] for Molar Enthalpy. Joule per Mole[kJ/mol] are the few other units in which Molar Enthalpy of Vaporization given Boiling Point of Solvent can be measured.

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