Table of Contents
Which of the following aqueous solution will have highest depression in freezing point?
So the depression in freezing point is 0.003. So here the lowest depression in freezing point has sucrose, hence it will have the highest freezing point.
Which of the following 0.1 M aqueous solution will have largest freezing point depression?
ΔTf (freezing point depression) is a colligative property and depends upon the van’t Hoff factor (i) i,e., number of ions given by the electrolyte in aqueous solution. Hence, Al2(SO4)3 will exhibit largest freezing point depression due to the highest value of i.
Which has highest depression in freezing point?
The maximum depression of the freezing point is about −18 °C (0 °F), so if the ambient temperature is lower, NaCl will be ineffective.
Which of the following 0.10 M aqueous solution will have maximum?
Thus, for a given solvent and given concentration, ΔTf is directly porportional to i (van’t hoff factor) i.e. maximum Tf (and hence lowest freezing point) will correspond to maximum value of i. Hence, 0.10M(≈0.10m) aqueous solution will have the lowest feezing point.
Which solution has freezing point?
Hence, the highest freezing point is 0.1 m of NaCl solution.
Which solution has the highest freezing point?
The highest freezing point will be the one with the lowest molality of particles of solute, the glucose solution; the next highest will be the Ca(NO3)2 solution; and the lowest freezing point will be the KCl solution.
Which has the minimum freezing point?
van’t Hoff factor, i = 2 for NaCl, so concentration = 0.02, which is maximum in the present case. Hence, ΔTf is maximum or freezing point is minimum in 0.01 m NaCl. The aqueous solution of 0.01M NaCl has a minimum freezing point.
Which of the following 0.1 M aqueous solution has the greatest reduction 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.
Which of the following 0.10 M aqueous solutions will have the lowest freezing point?
Which of the following 0.10 m aqueous solution will have the lowest freezing point? while KI provides two ions and C5H10O5 and C12H22O11 are not ionised, so they have single particle. Hence, lowest freezing point is possible for Al2(SO4)3.
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.
Why is freezing point depression a Colligative property?
The freezing point depression thus is called a colligative property. The explanation for the freezing point depression is then simply that as solvent molecules leave the liquid and join the solid, they leave behind a smaller volume of liquid in which the solute particles can roam.
What do you mean by depression in freezing point?
Freezing point depression refers to the lowering of the freezing point of solvents upon the addition of solutes. It is a colligative property of solutions that is generally proportional to the molality of the added solute.
Which of the following aqueous solution is the highest boiling point?
Answer: (b) As we know greater the value of van’t Hoff factor higher will be the elevation in boiling point and hence higher will be the boiling point of solution. Hence, 1.0 M Na2St4 has highest value of boiling point.
What aqueous solution will have the lowest freezing point?
Among the solutions, 0.15 m NaCl has the lowest freezing point.
Which of the following aqueous solution has lowest freezing point?
B. 1mNH4Cl. D. 1m BaCl2. Depression of freezing will be maximum for BaCl2 due to dissociation and hence the freezing point will be lowest.
Which has highest freezing point at 1 atm?
solution comprises the maximum number of solute particles, its freezing point will be the lowest and sugar solution comprises the minimum number of solute particles so its freezing point will be the highest. So, the correct answer is Option B.
Is freezing point depression positive or 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 is the formula of 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.
Which has maximum freezing point 6g urea?
Value of van’t Hoff factor is least for urea solution, so there will be least depression in freezing point i.e. maximum freezing point.
How do you know which solution has the lowest freezing point?
To compare freezing points, we need to know the total concentration of all particles when the solute has been dissolved. Remember, the greater the concentration of particles, the lower the freezing point will be.
Which solution will freeze at the lowest temperature?
Remember, the greater the concentration of particles, the lower the freezing point will be. 0.1mCaI2 will have the lowest freezing point, followed by 0.1mNaCl, and the highest of the three solutions will be 0.1mC6H12O6, but all three of them will have a lower freezing point than pure water.
Which gas has minimum freezing point?
That’s due to the fact that Helium has the lowest boiling and freezing points of any other known substance. Helium happens to be the only element that can’t be solidified or frozen at normal atmospheric pressure. Only once you apply a pressure of 25 atmospheres at Helium’s freezing point of −458 °F can you solidify it.
Which compound has minimum freezing point?
\]The aqueous solution of \[0.01M\text{ }NaCl\] has a minimum freezing point. So, the correct answer is “Option A”.
Which Equimolal concentrated solution has highest freezing point?
The freezing point of equimolal soution will be highest for : B. Ca(No3)2. C. La(NO3)3. La(NO3)3will furnish four ions and thus will develop more lowering in freezing point where as glucose gives only one particle and thus lowering in freezing point is minimum.
What is the normal BP of an aqueous solution whose freezing point is?
Freezing point of an aqueous solution is -0.
What is the boiling point of 1 molal aqueous solution of NaCl?
Pure water – microscopic view. Normal boiling point = 100.0oC. 1.0 M NaCl solution – microscopic view. Normal boiling point = 101.0oC.
Which of the following 0.1 M aqueous solutions will have the highest boiling point?
0.1 M FeCl3 gives maximum number of ions, thus has highest boiling point. Colligative properties like boiling point elevation, depend on the total number of particles in solution.
