Question

Rank the following aqueous solutions from highest to lowest freezing point: 0. 1 m fecl3, 0. 30 m glucose (c6h12o6), 0. 15 m cacl2. Assume complete dissociation.

Answer 1

From our understanding, we can confirm that the highest freezing point belongs to cacl2 or calcium chloride, the second highest is fecl3 or Iron 3 chloride, while the lowest belongs to Glucose.

What affects the freezing point of a substance?

The freezing point of a substance is determined by molecular forces. The stronger the forces that hold an object together, the higher its tendency to stay in a solid state and therefore results in a higher freezing point.

The freezing points for these substances are:

• Glucose at 146 degrees Celcius.
• Iron chloride at 306 degrees Celcius.
• Calcium chloride at 772 degrees Celcius.

Therefore, we can confirm that the highest freezing point belongs to cacl2 or calcium chloride, the second highest is fecl3 or Iron 3 chloride, while the lowest belongs to Glucose.

To learn more about freezing points visit:

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