What is the KF of ethylene glycol?

kb=0.52 and kf=1.86 MM of ethylene glycol=62.068 g/mol.

kb=0.52 and kf=1.86 MM of ethylene glycol=62.068 g/mol.

Likewise, what is the KF of chloroform? Molal Freezing and Boiling Point Data

Solvent Kf (°C kg/mol) Mpt (°C
Chloroform 4.68 -64
o -Cresol 5.60 31
p -Cresol 6.96 35
Cyclohexane 20.0 6

Regarding this, what is the KF of naphthalene?

The freezing point for naphthalene is 80.2°C and it Kf = 6.9 °C/m.

What is KF of benzene?

The freezing point of benzene, C6H6, is 5.500 degree C at 1 atmosphere. Kf(benzene) = -5.12 C/m

What is the KF value of water?

The Kf value for water is 1.86 °C ·kg/mol. 1.

What is the kb value of water?

List of boiling and freezing information of solvents Solvent Boiling point (°C) Kb (°C/mol/kg) Naphthalene 217.9 Nitrobenzene 210.8 5.24 Phenol 181.75 3.60 Water 100.00 0.512

How do you calculate KFP?

The freezing point depression ∆T = KF·m where KF is the molal freezing point depression constant and m is the molality of the solute. Rearrangement gives: mol solute = (m) x (kg solvent) where kg of solvent is the mass of the solvent (lauric acid) in the mixture. This gives the moles of the solute.

How do you determine boiling point?

Boiling-Point Elevation Example Glucose is our solute and water is the solvent. Kb for water is 0.51 degrees Celsius kg/mol. The molar mass of glucose is 180 g/mol. The boiling point of water is 100 degrees Celsius. The equation for boiling-point elevation is delta T = mKb.

What is the freezing point constant of ethylene glycol?

Pure ethylene glycol has a freezing point of −12.9∘C , and water’s freezing point is 0∘C .

What is the KF value for camphor?

Camphor has a particularly large freezing point depression (Kf) constant of 40 C/m. Camphor’s Kf value is over 20 times larger than water’s Kf value. Camphor has a freezing point of 176 Celsius.

What has the highest freezing point?

In the absence of nucleators water can exist as a supercooled liquid down to −48.3 °C (−55 °F, 224.8 K) before freezing. The chemical element with the highest melting point is tungsten, at 3,414 °C (6,177 °F; 3,687 K); this property makes tungsten excellent for use as filaments in light bulbs.

What is freezing point of ethanol?

-114.1 °C

What are the units of KF?

Kf is the molal freezing point depression constant of the solvent (1.86 °C/m for water). m = molality = moles of solute per kilogram of solvent.

What is Molality formula?

The formula for molality is m = moles of solute / kilograms of solvent. In problem solving involving molality, we sometimes need to use additional formulas to get to the final answer. One formula we need to be aware of is the formula for density, which is d = m / v, where d is density, m is mass and v is volume.

How do you solve for KF?

Divide the freezing point depression by the molal concentration so you have: Kf = delta Tf / cm. Insert the values for delta Tf and cm. For instance, if you have a solution with a molality of 0.455 which freezes at 3.17 degrees Celsius, then Kf would equal 3.17 divided by 0.455 or 6.96 degrees Celsius.

When salt is added to water what happens to the boiling point?

If you add salt to water, you raise the water’s boiling point, or the temperature at which it will boil. The temperature needed to boil will increase about 0.5 C for every 58 grams of dissolved salt per kilogram of water. This is an example of boiling point elevation, and it is not exclusive to water.

What is the freezing point of naphthalene?

80.26 °C