Relative Lowering of Vapour Pressure given Weight and Molecular Mass of Solute and Solvent Calculator

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✖The Weight of Solute is the quantity or amount of solute present in the solution.ⓘ Weight of Solute [w]			+10% -10%
✖The Molecular Mass Solvent is sum of the atomic masses of all atoms in a molecule, based on a scale in which the atomic masses.ⓘ Molecular Mass Solvent [M]			+10% -10%
✖The weight of solvent is the quantity of solvent in a solution.ⓘ Weight of solvent [W]			+10% -10%
✖The Molecular Mass Solute is the molecular mass of solute in solution.ⓘ Molecular Mass Solute [M_solute]			+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 Weight and Molecular Mass of Solute and Solvent [Δp]

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Relative Lowering of Vapour Pressure given Weight and Molecular Mass of Solute and Solvent Solution

STEP 0: Pre-Calculation Summary

Formula Used

Relative Lowering of Vapour Pressure = (Weight of Solute*Molecular Mass Solvent)/(Weight of solvent*Molecular Mass Solute)
Δp = (w*M)/(W*M_solute)
This formula uses 5 Variables

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.
Weight of Solute - (Measured in Kilogram) - The Weight of Solute is the quantity or amount of solute present in the solution.
Molecular Mass Solvent - (Measured in Kilogram) - The Molecular Mass Solvent is sum of the atomic masses of all atoms in a molecule, based on a scale in which the atomic masses.
Weight of solvent - (Measured in Kilogram) - The weight of solvent is the quantity of solvent in a solution.
Molecular Mass Solute - (Measured in Kilogram) - The Molecular Mass Solute is the molecular mass of solute in solution.

STEP 1: Convert Input(s) to Base Unit

Weight of Solute: 21 Gram --> 0.021 Kilogram (Check conversion here)
Molecular Mass Solvent: 18 Gram --> 0.018 Kilogram (Check conversion here)
Weight of solvent: 20 Gram --> 0.02 Kilogram (Check conversion here)
Molecular Mass Solute: 35 Gram --> 0.035 Kilogram (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Δp = (w*M)/(W*M_solute) --> (0.021*0.018)/(0.02*0.035)

Evaluating ... ...

Δp = 0.54

STEP 3: Convert Result to Output's Unit

0.54 --> No Conversion Required

FINAL ANSWER

0.54 <-- Relative Lowering of Vapour Pressure

(Calculation completed in 00.004 seconds)

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< Relative Lowering of Vapour Pressure Calculators

Molecular Mass of Solvent given Relative Lowering of Vapour Pressure

LaTeX Go Molecular Mass Solvent = ((Vapour Pressure of Pure Solvent-Vapour Pressure of Solvent in Solution)*1000)/(Molality*Vapour Pressure of Pure Solvent)

Relative Lowering of Vapour Pressure

LaTeX Go Relative Lowering of Vapour Pressure = (Vapour Pressure of Pure Solvent-Vapour Pressure of Solvent in Solution)/Vapour Pressure of Pure Solvent

Mole Fraction of Solute given Vapour Pressure

LaTeX Go Mole Fraction of Solute = (Vapour Pressure of Pure Solvent-Vapour Pressure of Solvent in Solution)/Vapour Pressure of Pure Solvent

Mole Fraction of Solvent given Vapour Pressure

LaTeX Go Mole Fraction of Solvent = Vapour Pressure of Solvent in Solution/Vapour Pressure of Pure Solvent

Relative Lowering of Vapour Pressure given Weight and Molecular Mass of Solute and Solvent Formula

LaTeX Go

Relative Lowering of Vapour Pressure = (Weight of Solute*Molecular Mass Solvent)/(Weight of solvent*Molecular Mass Solute)
Δp = (w*M)/(W*M_solute)

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 Weight and Molecular Mass of Solute and Solvent?

Relative Lowering of Vapour Pressure given Weight and Molecular Mass of Solute and Solvent calculator uses Relative Lowering of Vapour Pressure = (Weight of Solute*Molecular Mass Solvent)/(Weight of solvent*Molecular Mass Solute) to calculate the Relative Lowering of Vapour Pressure, The Relative Lowering of Vapour Pressure given Weight and Molecular Mass of Solute and Solvent is the relative measure of lowering of vapour pressure of solvent post addition of solute. Relative Lowering of Vapour Pressure is denoted by Δp symbol.

How to calculate Relative Lowering of Vapour Pressure given Weight and Molecular Mass of Solute and Solvent using this online calculator? To use this online calculator for Relative Lowering of Vapour Pressure given Weight and Molecular Mass of Solute and Solvent, enter Weight of Solute (w), Molecular Mass Solvent (M), Weight of solvent (W) & Molecular Mass Solute (M_solute) and hit the calculate button. Here is how the Relative Lowering of Vapour Pressure given Weight and Molecular Mass of Solute and Solvent calculation can be explained with given input values -> 0.54 = (0.021*0.018)/(0.02*0.035).

FAQ

What is Relative Lowering of Vapour Pressure given Weight and Molecular Mass of Solute and Solvent?

The Relative Lowering of Vapour Pressure given Weight and Molecular Mass of Solute and Solvent is the relative measure of lowering of vapour pressure of solvent post addition of solute and is represented as Δp = (w*M)/(W*M_solute) or Relative Lowering of Vapour Pressure = (Weight of Solute*Molecular Mass Solvent)/(Weight of solvent*Molecular Mass Solute). The Weight of Solute is the quantity or amount of solute present in the solution, The Molecular Mass Solvent is sum of the atomic masses of all atoms in a molecule, based on a scale in which the atomic masses, The weight of solvent is the quantity of solvent in a solution & The Molecular Mass Solute is the molecular mass of solute in solution.

How to calculate Relative Lowering of Vapour Pressure given Weight and Molecular Mass of Solute and Solvent?

The Relative Lowering of Vapour Pressure given Weight and Molecular Mass of Solute and Solvent is the relative measure of lowering of vapour pressure of solvent post addition of solute is calculated using Relative Lowering of Vapour Pressure = (Weight of Solute*Molecular Mass Solvent)/(Weight of solvent*Molecular Mass Solute). To calculate Relative Lowering of Vapour Pressure given Weight and Molecular Mass of Solute and Solvent, you need Weight of Solute (w), Molecular Mass Solvent (M), Weight of solvent (W) & Molecular Mass Solute (M_solute). With our tool, you need to enter the respective value for Weight of Solute, Molecular Mass Solvent, Weight of solvent & Molecular Mass Solute and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Relative Lowering of Vapour Pressure?

In this formula, Relative Lowering of Vapour Pressure uses Weight of Solute, Molecular Mass Solvent, Weight of solvent & Molecular Mass Solute. We can use 3 other way(s) to calculate the same, which is/are as follows -

Relative Lowering of Vapour Pressure = (Vapour Pressure of Pure Solvent-Vapour Pressure of Solvent in Solution)/Vapour Pressure of Pure Solvent
Relative Lowering of Vapour Pressure = Number of Moles of Solute/Number of Moles of Solvent
Relative Lowering of Vapour Pressure = Number of Moles of Solute/(Number of Moles of Solute+Number of Moles of Solvent)

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