# Problem: List the following aqueous solutions in order of decreasing freezing point: 0.040 m glycerin (C3H8O3), 0.020 m potassium bromide (KBr), 0.030 m phenol ( C6H5OH).

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81% (117 ratings)
###### FREE Expert Solution

We’re being asked to list the given aqueous solutions in order of decreasing freezing point.

Recall that the freezing point of a solution is lower than that of the pure solvent and the change in freezing point (ΔT­f) is given by:

The change in freezing point is also related to the molality of the solution:

$\overline{){{\mathbf{\Delta T}}}_{{\mathbf{f}}}{\mathbf{=}}{{\mathbf{imK}}}_{{\mathbf{f}}}}$

where:

i = van’t Hoff factor

m = molality of the solution (in m or mol/kg)

Kf = freezing point depression constant (in ˚C/m) of the solvent

81% (117 ratings) ###### Problem Details

List the following aqueous solutions in order of decreasing freezing point: 0.040 m glycerin (C3H8O3), 0.020 m potassium bromide (KBr), 0.030 m phenol ( C6H5OH).

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the The Colligative Properties concept. You can view video lessons to learn The Colligative Properties. Or if you need more The Colligative Properties practice, you can also practice The Colligative Properties practice problems.

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Our tutors rated the difficulty ofList the following aqueous solutions in order of decreasing ...as medium difficulty.

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Based on our data, we think this problem is relevant for Professor Bradbury's class at CERRITOS.