Quick Answer: Why Is Freezing Point Depression Of 0.1 M Sodium Chloride Solution Nearly Twice That Of 0.1 M Glucose Solution?

Which aqueous solution has maximum freezing point?

We can see that lowest depression in freezing point is of 0.005M C2H5OH as it has least effective particle concentration.

Since it has least depression, it has maximum freezing point.

◾️So, the correct answer is option (b)..

What is the freezing point of a .1 M solution of glucose?

The freezing point of a glucose solution ( C6H12O6;molar mass= 180.0 g/mole) is – 10.3 degree C ….

What is M in freezing point depression?

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 factors affect freezing point?

Changes in pressure can raise or lower the freezing point of a substance. Generally, pressures lower than 1 atmosphere lower the temperature at which a substance freezes, but for water, a higher pressure gives a lower freezing point.

Why is there a depression in freezing point?

Freezing point depression is the phenomena that describes why adding a solute to a solvent results in the lowering of the freezing point of the solvent. When a substance starts to freeze, the molecules slow down due to the decreases in temperature, and the intermolecular forces start to take over.

How do you make a 0.1 M solution?

To make a 0.1M NaCl solution, you could weigh 5.844g of NaCl and dissolve it in 1 litre of water; OR 0.5844g of NaCl in 100mL of water (see animation below); OR make a 1:10 dilution of a 1M sample.

What is a 0.1 M solution?

A 0.1 M solution contains one mole of solute per liter of solution. … When you’re preparing a volume other than one liter and the amount of solute isn’t as obvious, it can be calculated using moles = molarity x volume (in liters).

What is the freezing point of alcl3?

192.4 °CAluminium chloride/Melting point

Does freezing point depends on pressure?

For most substances, the freezing point rises, though only very slightly, with increased pressure. Water is one of the very rare substances that expands upon freezing (which is why ice floats). Consequently, its melting temperature falls very slightly if pressure is increased.

Which of the following has maximum depression in freezing point?

So the maximum depression of freezing point is maximum for Potassium sulphate.

Why is freezing point depression a Colligative property?

Freezing point depression is a colligative property observed in solutions that results from the introduction of solute molecules to a solvent. The freezing points of solutions are all lower than that of the pure solvent and is directly proportional to the molality of the solute.

How do you make a 0.1 solution?

You can first prepare 0.5% solution (0.5 g per 100 ml) and for 0.25, 0.1, 0.025 and 0.05%, respectively, dilute to half, one fifth, one twentieth and one tenth. For example, add 9 ml water to 1 ml of the stock solution, to 10 times dilute and obtain a concentration of 0.05%.

What is the freezing point of glucose?

146 °CGlucose/Melting point

Which has maximum freezing point?

45g of ethylene glycol (C2​H6​O2​) is mixed with 600g of water. The freezing point of the solution is (Kf​ for water is 1. 86K kg mol−1).

What is lowest freezing point?

Mercury has the lowest freezing point of any metal, at -38.87° C. Helium has the lowest freezing point of all substances, at -272.2° C, which is less than I° above absolute zero.

Which of the following 0.1 M aqueous solutions is likely to have the highest depression in freezing point?

Sodium chloride gives two ions and potassium sulphate gives three ions per formula unit. Therefore, the effective number of particles is maximum in potassium sulphate, and it shows the maximum depression in freezing point.

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.

Can freezing point depression be negative?

The change in the freezing point is proportional to the amount of solute added. This phenomenon is called freezing point depression. The change in the freezing point is defined as: ∆Tf = Tf,solution − Tf,solvent. ∆Tf is negative because the temperature of the solution is lower than that of the pure solvent.

What does 0.1 m NaOH mean?

One approach is to prepare the solution volumetrically using sodium hydroxide pellets. If, for example you are preparing 1 liter of 0.1 M NaOH you would add 0.1 moles of NaOH (0.1 X 40.00 g/mole or 4.00 g of NaOH) to a 1 liter volumetric flask, add deionized water until near the fill line, stopper and mix.