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Relative Lowering of Vapour Pressure given Depression in Freezing Point Calculator

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✖The Molar Enthalpy of Fusion is the amount of energy needed to change one mole of a substance from the solid phase to the liquid phase at constant temperature and pressure.ⓘ Molar Enthalpy of Fusion [ΔH_fusion]			+10% -10%
✖The Depression in Freezing Point is the phenomena that describes why adding a solute to a solvent results in the lowering of the freezing point of the solvent.ⓘ Depression in Freezing Point [ΔT_f]			+10% -10%
✖Solvent Freezing Point is the temperature at which the solvent freezes from liquid to solid state.ⓘ Solvent Freezing Point [T_fp]			+10% -10%

✖The Relative Lowering of Vapour Pressure is the lowering of vapour pressure of pure solvent on addition of solute.ⓘ Relative Lowering of Vapour Pressure given Depression in Freezing Point [RLVP]

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Relative Lowering of Vapour Pressure given Depression in Freezing Point Solution

STEP 0: Pre-Calculation Summary

Formula Used

Relative Lowering of Vapour Pressure = (Molar Enthalpy of Fusion*Depression in Freezing Point)/([R]*Solvent Freezing Point*Solvent Freezing Point)
RLVP = (ΔH_fusion*ΔT_f)/([R]*T_fp*T_fp)
This formula uses 1 Constants, 4 Variables

Constants Used

[R] - Universal gas constant Value Taken As 8.31446261815324

Variables Used

Relative Lowering of Vapour Pressure - The Relative Lowering of Vapour Pressure is the lowering of vapour pressure of pure solvent on addition of solute.
Molar Enthalpy of Fusion - (Measured in Joule per Mole) - The Molar Enthalpy of Fusion is the amount of energy needed to change one mole of a substance from the solid phase to the liquid phase at constant temperature and pressure.
Depression in Freezing Point - (Measured in Kelvin) - The Depression in Freezing Point is the phenomena that describes why adding a solute to a solvent results in the lowering of the freezing point of the solvent.
Solvent Freezing Point - (Measured in Kelvin) - Solvent Freezing Point is the temperature at which the solvent freezes from liquid to solid state.

STEP 1: Convert Input(s) to Base Unit

Molar Enthalpy of Fusion: 333.5 Kilojoule per Mole --> 333500 Joule per Mole (Check conversion here)
Depression in Freezing Point: 12 Kelvin --> 12 Kelvin No Conversion Required
Solvent Freezing Point: 430 Kelvin --> 430 Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

RLVP = (ΔH_fusion*ΔT_f)/([R]*T_fp*T_fp) --> (333500*12)/([R]*430*430)

Evaluating ... ...

RLVP = 2.60319072407242

STEP 3: Convert Result to Output's Unit

2.60319072407242 --> No Conversion Required

FINAL ANSWER

2.60319072407242 ≈ 2.603191 <-- Relative Lowering of Vapour Pressure

(Calculation completed in 00.004 seconds)

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< Depression in Freezing Point Calculators

Cryoscopic Constant given Molar Enthalpy of Fusion

LaTeX Go Cryoscopic Constant = ([R]*Solvent Freezing Point*Solvent Freezing Point*Molar Mass of Solvent)/(1000*Molar Enthalpy of Fusion)

Molality given Depression in Freezing Point

LaTeX Go Molality = Depression in Freezing Point/(Cryoscopic Constant*Van't Hoff Factor)

Van't Hoff equation for Depression in Freezing Point of electrolyte

LaTeX Go Depression in Freezing Point = Van't Hoff Factor*Cryoscopic Constant*Molality

Depression in Freezing Point of Solvent

LaTeX Go Depression in Freezing Point = Cryoscopic Constant*Molality

Relative Lowering of Vapour Pressure given Depression in Freezing Point Formula

LaTeX Go

Relative Lowering of Vapour Pressure = (Molar Enthalpy of Fusion*Depression in Freezing Point)/([R]*Solvent Freezing Point*Solvent Freezing Point)
RLVP = (ΔH_fusion*ΔT_f)/([R]*T_fp*T_fp)

What causes the Relative Lowering Of Vapour Pressure?

This lowering in vapour pressure is due to the fact that after the solute was added to the pure liquid (solvent), the liquid surface now had molecules of both, the pure liquid and the solute. The number of solvent molecules escaping into vapour phase gets reduced and as a result the pressure exerted by the vapour phase is also reduced. This is known as relative lowering of vapour pressure. This decrease in vapour pressure depends on the amount of non-volatile solute added in the solution irrespective of its nature and hence it is one of the colligative properties.

How to Calculate Relative Lowering of Vapour Pressure given Depression in Freezing Point?

Relative Lowering of Vapour Pressure given Depression in Freezing Point calculator uses Relative Lowering of Vapour Pressure = (Molar Enthalpy of Fusion*Depression in Freezing Point)/([R]*Solvent Freezing Point*Solvent Freezing Point) to calculate the Relative Lowering of Vapour Pressure, The Relative Lowering of Vapour Pressure given Depression in Freezing 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 calculate Relative Lowering of Vapour Pressure given Depression in Freezing Point using this online calculator? To use this online calculator for Relative Lowering of Vapour Pressure given Depression in Freezing Point, enter Molar Enthalpy of Fusion (ΔH_fusion), Depression in Freezing Point (ΔT_f) & Solvent Freezing Point (T_fp) and hit the calculate button. Here is how the Relative Lowering of Vapour Pressure given Depression in Freezing Point calculation can be explained with given input values -> 2.603191 = (333500*12)/([R]*430*430).

FAQ

What is Relative Lowering of Vapour Pressure given Depression in Freezing Point?

The Relative Lowering of Vapour Pressure given Depression in Freezing Point is the relative measure of lowering of vapour pressure on addition of solute to solvent and is represented as RLVP = (ΔH_fusion*ΔT_f)/([R]*T_fp*T_fp) or Relative Lowering of Vapour Pressure = (Molar Enthalpy of Fusion*Depression in Freezing Point)/([R]*Solvent Freezing Point*Solvent Freezing Point). The Molar Enthalpy of Fusion is the amount of energy needed to change one mole of a substance from the solid phase to the liquid phase at constant temperature and pressure, The Depression in Freezing Point is the phenomena that describes why adding a solute to a solvent results in the lowering of the freezing point of the solvent & Solvent Freezing Point is the temperature at which the solvent freezes from liquid to solid state.

How to calculate Relative Lowering of Vapour Pressure given Depression in Freezing Point?

The Relative Lowering of Vapour Pressure given Depression in Freezing Point is the relative measure of lowering of vapour pressure on addition of solute to solvent is calculated using Relative Lowering of Vapour Pressure = (Molar Enthalpy of Fusion*Depression in Freezing Point)/([R]*Solvent Freezing Point*Solvent Freezing Point). To calculate Relative Lowering of Vapour Pressure given Depression in Freezing Point, you need Molar Enthalpy of Fusion (ΔH_fusion), Depression in Freezing Point (ΔT_f) & Solvent Freezing Point (T_fp). With our tool, you need to enter the respective value for Molar Enthalpy of Fusion, Depression in Freezing Point & Solvent Freezing Point and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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