How do you find the freezing point of lauric acid?

the freezing-point depression follows a simple direct proportionality relationship: ∆Tf = Kf·m (1) where the proportionality constant, Kf, is called the molal freezing-point depression constant. Lauric acid (the solvent in this experiment) has a reported Kf = 3.9 °C·kg/mol = 3.9 °C/m.

What is the freezing point constant of lauric acid?

3.9˚C
The freezing-point depression constant (Kf) for lauric acid is given (3.9˚C•kg/mol).

What is the freezing point of lauric acid and benzoic acid?

There is 7.08 grams of lauric acid in the mixture and 1.71 grams of benzoic acid in the mixture. The molal freezing point depression constant of lauric acid has been determined Kf=3.9 degrrees celcius.

What is the temperature of lauric acid?

43.8°C
Laboratory use The choice of lauric acid is convenient because the melting point of the pure compound is relatively high (43.8°C).

How do you calculate the freezing point?

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.

What happens when lauric acid is cooled?

Eventually, at some temperature, which is called the melting point, the molecules overcome the forces of attraction holding the particles together, and the substance changed to a liquid. When a liquid is cooled, the reverse process occurs.

What is KF formula?

To calculate the freezing point depression constant, or Kf, you’ll need the equation: delta Tf = Kfcm where cm is the molal concentration of the solution.

Is lauric acid safe for human consumption?

Lauric acid is safe in amounts found in foods.

Is lauric acid bad for skin?

The bacteria Propionibacterium acnes are found naturally on the skin. When they overgrow, they lead to the development of acne. The results of a 2009 study found that lauric acid could reduce inflammation and the number of bacteria present. Lauric acid worked even better than benzoyl peroxide, a common acne treatment.

Which element has highest freezing point?

What’s the Freezing Point of Helium?

• Bearing the symbol He and atomic number 2, Helium is a colorless, non-toxic, monatomic gas that’s the first and lightest member of the noble gas group in the periodic table.
• Only once you apply a pressure of 25 atmospheres at Helium’s freezing point of −458 °F can you solidify it.

How do you heat up lauric acid?

Record the temperature of the lauric acid at 30-second intervals until the temperature reaches about 50oC. As soon as it is melted enough to stir the lauric acid with a thermometer, carefully do so. You now have completed the heating curve data.

Does freezing lauric acid undergo a chemical change?

1. The lauric acid did not undergo a chemical change because nothing was added or removed from the original acid. The only thing that happened was the change of the temperature of the water. The system absorbed energy when freezing, and released it when melting which was evident by the change of the state.

Is lauric acid solid at room temperature?

Lauric acid (> 95%) is a white solid product at room temperature. This is an irritating and corrosive product. Its freezing point is approximately 42º or so.

What is the enthalpy of fusion of lauric acid?

The enthalpy of fusion for Lauric acid (C12H24O2) is 32.86 kJ/mol and enthalpy of vaporization is 63.82 kJ/mol. The melting point is 43.2 degrees C.

What is the molar mass for lauric acid?

The average molar mass of the chemical compound Lauric acid is 200.318 grams per mole