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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. Check FAQs
ΔTf=ΔHvapΔTb(Tfp2)ΔHfusion(Tbp2)
ΔTf - Depression in Freezing Point?ΔHvap - Molar Enthalpy of Vaporization?ΔTb - Elevation in Boiling Point?Tfp - Solvent Freezing Point?ΔHfusion - Molar Enthalpy of Fusion?Tbp - Solvent Boiling Point?

Depression in Freezing Point given Elevation in Boiling Point Example

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With units
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Here is how the Depression in Freezing Point given Elevation in Boiling Point equation looks like with Values.

Here is how the Depression in Freezing Point given Elevation in Boiling Point equation looks like with Units.

Here is how the Depression in Freezing Point given Elevation in Boiling Point equation looks like.

30086.6767Edit=40.7Edit300Edit(430Edit2)333.5Edit(15Edit2)
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Depression in Freezing Point given Elevation in Boiling Point Solution

Follow our step by step solution on how to calculate Depression in Freezing Point given Elevation in Boiling Point?

FIRST Step Consider the formula
ΔTf=ΔHvapΔTb(Tfp2)ΔHfusion(Tbp2)
Next Step Substitute values of Variables
ΔTf=40.7kJ/mol300K(430K2)333.5kJ/mol(15K2)
Next Step Convert Units
ΔTf=40700J/mol300K(430K2)333500J/mol(15K2)
Next Step Prepare to Evaluate
ΔTf=40700300(4302)333500(152)
Next Step Evaluate
ΔTf=30086.6766616692K
LAST Step Rounding Answer
ΔTf=30086.6767K

Depression in Freezing Point given Elevation in Boiling Point Formula Elements

Variables
Depression in Freezing Point
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.
Symbol: ΔTf
Measurement: TemperatureUnit: K
Note: Value can be positive or negative.
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: ΔHvap
Measurement: Molar EnthalpyUnit: kJ/mol
Note: Value should be greater than 0.
Elevation in Boiling Point
The Elevation in Boiling Point describes the phenomenon that the boiling point of a liquid (a solvent) will be higher when another compound is added.
Symbol: ΔTb
Measurement: TemperatureUnit: K
Note: Value should be greater than 0.
Solvent Freezing Point
Solvent Freezing Point is the temperature at which the solvent freezes from liquid to solid state.
Symbol: Tfp
Measurement: TemperatureUnit: K
Note: Value can be positive or negative.
Molar Enthalpy of Fusion
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.
Symbol: ΔHfusion
Measurement: Molar EnthalpyUnit: kJ/mol
Note: Value should be greater than 0.
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: Tbp
Measurement: TemperatureUnit: K
Note: Value can be positive or negative.

Other Formulas to find Depression in Freezing Point

​Go Depression in Freezing Point of Solvent
ΔTf=kfm
​Go Van't Hoff equation for Depression in Freezing Point of electrolyte
ΔTf=ikfm
​Go Depression in Freezing Point given Vapour Pressure
ΔTf=(PoA-PA)[R](Tfp2)PoAΔHfusion
​Go Depression in Freezing Point given Osmotic Pressure
ΔTf=πVm(Tfp2)TΔHfusion

Other formulas in Depression in Freezing Point category

​Go Molality given Depression in Freezing Point
m=ΔTfkfi
​Go Cryoscopic Constant given Molar Enthalpy of Fusion
kf=[R]TfpTfpMsolvent1000ΔHfusion
​Go Cryoscopic Constant given Latent Heat of Fusion
kf=[R]Tf21000Lfusion
​Go Freezing Point of Solvent given Cryoscopic Constant and Molar Enthalpy of Fusion
Tfp=kf1000ΔHfusion[R]Msolvent

How to Evaluate Depression in Freezing Point given Elevation in Boiling Point?

Depression in Freezing Point given Elevation in Boiling Point evaluator uses Depression in Freezing Point = (Molar Enthalpy of Vaporization*Elevation in Boiling Point*(Solvent Freezing Point^2))/(Molar Enthalpy of Fusion*(Solvent Boiling Point^2)) to evaluate the Depression in Freezing Point, The Depression in Freezing Point given Elevation in Boiling Point refers to the lowering of the freezing point of solvents upon the addition of solutes. It is a colligative property described by the following formula. ΔTf = Kf× m. Depression in Freezing Point is denoted by ΔTf symbol.

How to evaluate Depression in Freezing Point given Elevation in Boiling Point using this online evaluator? To use this online evaluator for Depression in Freezing Point given Elevation in Boiling Point, enter Molar Enthalpy of Vaporization (ΔHvap), Elevation in Boiling Point (ΔTb), Solvent Freezing Point (Tfp), Molar Enthalpy of Fusion (ΔHfusion) & Solvent Boiling Point (Tbp) and hit the calculate button.

FAQs on Depression in Freezing Point given Elevation in Boiling Point

What is the formula to find Depression in Freezing Point given Elevation in Boiling Point?
The formula of Depression in Freezing Point given Elevation in Boiling Point is expressed as Depression in Freezing Point = (Molar Enthalpy of Vaporization*Elevation in Boiling Point*(Solvent Freezing Point^2))/(Molar Enthalpy of Fusion*(Solvent Boiling Point^2)). Here is an example- 30086.68 = (40700*300*(430^2))/(333500*(15^2)).
How to calculate Depression in Freezing Point given Elevation in Boiling Point?
With Molar Enthalpy of Vaporization (ΔHvap), Elevation in Boiling Point (ΔTb), Solvent Freezing Point (Tfp), Molar Enthalpy of Fusion (ΔHfusion) & Solvent Boiling Point (Tbp) we can find Depression in Freezing Point given Elevation in Boiling Point using the formula - Depression in Freezing Point = (Molar Enthalpy of Vaporization*Elevation in Boiling Point*(Solvent Freezing Point^2))/(Molar Enthalpy of Fusion*(Solvent Boiling Point^2)).
What are the other ways to Calculate Depression in Freezing Point?
Here are the different ways to Calculate Depression in Freezing Point-
  • Depression in Freezing Point=Cryoscopic Constant*MolalityOpenImg
  • Depression in Freezing Point=Van't Hoff Factor*Cryoscopic Constant*MolalityOpenImg
  • Depression in Freezing Point=((Vapour Pressure of Pure Solvent-Vapour Pressure of Solvent in Solution)*[R]*(Solvent Freezing Point^2))/(Vapour Pressure of Pure Solvent*Molar Enthalpy of Fusion)OpenImg
Can the Depression in Freezing Point given Elevation in Boiling Point be negative?
Yes, the Depression in Freezing Point given Elevation in Boiling Point, measured in Temperature can be negative.
Which unit is used to measure Depression in Freezing Point given Elevation in Boiling Point?
Depression in Freezing Point given Elevation in Boiling Point is usually measured using the Kelvin[K] for Temperature. Celsius[K], Fahrenheit[K], Rankine[K] are the few other units in which Depression in Freezing Point given Elevation in Boiling Point can be measured.
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