Molality given Freezing Point Depression Solution

STEP 0: Pre-Calculation Summary
Formula Used
Molality = Depression in Freezing Point/Molal freezing point constant
m = ΔTf/Kf
This formula uses 3 Variables
Variables Used
Molality - (Measured in Mole per Kilogram) - Molality is defined as the total number of moles of solute per kilograms of solvent present in the solution.
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.
Molal freezing point constant - (Measured in Kelvin Kilogram per Mole) - Molal freezing point constant, also known as cryoscopic constant is dependent on the properties of the solvent, not the solute.
STEP 1: Convert Input(s) to Base Unit
Depression in Freezing Point: 12 Kelvin --> 12 Kelvin No Conversion Required
Molal freezing point constant: 100 Kelvin Kilogram per Mole --> 100 Kelvin Kilogram per Mole No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
m = ΔTf/Kf --> 12/100
Evaluating ... ...
m = 0.12
STEP 3: Convert Result to Output's Unit
0.12 Mole per Kilogram --> No Conversion Required
FINAL ANSWER
0.12 Mole per Kilogram <-- Molality
(Calculation completed in 00.004 seconds)

Credits

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Created by Akshada Kulkarni
National Institute of Information Technology (NIIT), Neemrana
Akshada Kulkarni has created this Calculator and 500+ more calculators!
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Verified by Suman Ray Pramanik
Indian Institute of Technology (IIT), Kanpur
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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

Molality given Freezing Point Depression Formula

​LaTeX ​Go
Molality = Depression in Freezing Point/Molal freezing point constant
m = ΔTf/Kf

Explain Freezing Point Depression.

The Freezing point depression is the temperature at which the liquid solvent and solid solvent are at equilibrium so that their vapor pressures are equal. When a non-volatile solute is added to a volatile liquid solvent, the solution vapor pressure will be lower than that of the pure solvent. As a result, the solid will reach equilibrium with the solution at a lower temperature than with the pure solvent.

How to Calculate Molality given Freezing Point Depression?

Molality given Freezing Point Depression calculator uses Molality = Depression in Freezing Point/Molal freezing point constant to calculate the Molality, The Molality given Freezing Point Depression is defined as the total number of moles of solute per kilograms of solvent present in the solution. Molality is denoted by m symbol.

How to calculate Molality given Freezing Point Depression using this online calculator? To use this online calculator for Molality given Freezing Point Depression, enter Depression in Freezing Point (ΔTf) & Molal freezing point constant (Kf) and hit the calculate button. Here is how the Molality given Freezing Point Depression calculation can be explained with given input values -> 0.12 = 12/100.

FAQ

What is Molality given Freezing Point Depression?
The Molality given Freezing Point Depression is defined as the total number of moles of solute per kilograms of solvent present in the solution and is represented as m = ΔTf/Kf or Molality = Depression in Freezing Point/Molal freezing point constant. 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 & Molal freezing point constant, also known as cryoscopic constant is dependent on the properties of the solvent, not the solute.
How to calculate Molality given Freezing Point Depression?
The Molality given Freezing Point Depression is defined as the total number of moles of solute per kilograms of solvent present in the solution is calculated using Molality = Depression in Freezing Point/Molal freezing point constant. To calculate Molality given Freezing Point Depression, you need Depression in Freezing Point (ΔTf) & Molal freezing point constant (Kf). With our tool, you need to enter the respective value for Depression in Freezing Point & Molal freezing point constant 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 Molality?
In this formula, Molality uses Depression in Freezing Point & Molal freezing point constant. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Molality = Depression in Freezing Point/(Cryoscopic Constant*Van't Hoff Factor)
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