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Relative Lowering of Vapour Pressure given Elevation in Boiling Point Formula

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The Relative Lowering of Vapour Pressure is the lowering of vapour pressure of pure solvent on addition of solute. Check FAQs

RLVP = \frac{ΔH vap \cdot ΔT b}{[R] \cdot T bp \cdot T bp}

RLVP - Relative Lowering of Vapour Pressure?ΔH_vap - Molar Enthalpy of Vaporization?ΔT_b - Boiling Point Elevation?T_bp - Solvent Boiling Point?[R] - Universal gas constant?

Relative Lowering of Vapour Pressure given Elevation in Boiling Point Example

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Here is how the Relative Lowering of Vapour Pressure given Elevation in Boiling Point equation looks like with Values.

Here is how the Relative Lowering of Vapour Pressure given Elevation in Boiling Point equation looks like with Units.

Here is how the Relative Lowering of Vapour Pressure given Elevation in Boiling Point equation looks like.

21.5384 = \frac{40.7 \cdot 0.99}{8.3145 \cdot 15 \cdot 15}

21.5384 = \frac{40.7kJ/mol \cdot 0.99K}{8.3145 \cdot 15K \cdot 15K}

21.5384 = \frac{40.7 \cdot 0.99}{8.3145 \cdot 15 \cdot 15}

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Elevation in Boiling Point » fx Relative Lowering of Vapour Pressure given Elevation in Boiling Point

Relative Lowering of Vapour Pressure given Elevation in Boiling Point Solution

Follow our step by step solution on how to calculate Relative Lowering of Vapour Pressure given Elevation in Boiling Point?

FIRST Step Consider the formula

RLVP = \frac{ΔH vap \cdot ΔT b}{[R] \cdot T bp \cdot T bp}

Next Step Substitute values of Variables

∴

RLVP = \frac{40.7kJ/mol \cdot 0.99K}{[R] \cdot 15K \cdot 15K}

Next Step Substitute values of Constants

∴

RLVP = \frac{40.7kJ/mol \cdot 0.99K}{8.3145 \cdot 15K \cdot 15K}

Next Step Convert Units

∴

RLVP = \frac{40700J/mol \cdot 0.99K}{8.3145 \cdot 15K \cdot 15K}

Next Step Prepare to Evaluate

∴

RLVP = \frac{40700 \cdot 0.99}{8.3145 \cdot 15 \cdot 15}

Next Step Evaluate

∴

RLVP = 21.5383733410514

LAST Step Rounding Answer

∴

RLVP = 21.5384

Relative Lowering of Vapour Pressure given Elevation in Boiling Point Formula Elements

Variables

Constants

Relative Lowering of Vapour Pressure

The Relative Lowering of Vapour Pressure is the lowering of vapour pressure of pure solvent on addition of solute.

Symbol: RLVP

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Relative Lowering of Vapour Pressure

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

Boiling Point Elevation

Boiling point elevation refers to the increase in the boiling point of a solvent upon the addition of a solute.

Symbol: ΔT_b

Measurement: TemperatureUnit: K

Note: Value should be greater than 0.

Formulas to find Boiling Point Elevation

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

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 Relative Lowering of Vapour Pressure given Elevation in Boiling Point?

Relative Lowering of Vapour Pressure given Elevation in Boiling Point evaluator uses Relative Lowering of Vapour Pressure = (Molar Enthalpy of Vaporization*Boiling Point Elevation)/([R]*Solvent Boiling Point*Solvent Boiling Point) to evaluate the Relative Lowering of Vapour Pressure, The Relative Lowering of Vapour Pressure given Elevation in Boiling Point is the relative measure of lowering of vapour pressure on addition of solute to solvent. Relative Lowering of Vapour Pressure is denoted by RLVP symbol.

How to evaluate Relative Lowering of Vapour Pressure given Elevation in Boiling Point using this online evaluator? To use this online evaluator for Relative Lowering of Vapour Pressure given Elevation in Boiling Point, enter Molar Enthalpy of Vaporization (ΔH_vap), Boiling Point Elevation (ΔT_b) & Solvent Boiling Point (T_bp) and hit the calculate button.

FAQs on Relative Lowering of Vapour Pressure given Elevation in Boiling Point

What is the formula to find Relative Lowering of Vapour Pressure given Elevation in Boiling Point?

The formula of Relative Lowering of Vapour Pressure given Elevation in Boiling Point is expressed as Relative Lowering of Vapour Pressure = (Molar Enthalpy of Vaporization*Boiling Point Elevation)/([R]*Solvent Boiling Point*Solvent Boiling Point). Here is an example- 21.53837 = (40700*0.99)/([R]*15*15).

How to calculate Relative Lowering of Vapour Pressure given Elevation in Boiling Point?

With Molar Enthalpy of Vaporization (ΔH_vap), Boiling Point Elevation (ΔT_b) & Solvent Boiling Point (T_bp) we can find Relative Lowering of Vapour Pressure given Elevation in Boiling Point using the formula - Relative Lowering of Vapour Pressure = (Molar Enthalpy of Vaporization*Boiling Point Elevation)/([R]*Solvent Boiling Point*Solvent Boiling Point). This formula also uses Universal gas constant .

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