Interpretation: The expected freezing point of
Concept introduction:
Colligative properties: Properties of solutions which having influence on the concentration of the solute in it. Colligative properties are,
- Decrease in the vapor pressure
- Increase in the boiling point
- Decline in the freezing point
- Osmotic pressure
Decline in the freezing point is huge when solute is an electrolyte than when solute is nonelectrolyte. Therefore, change in freezing point is calculated by using the equation,
where,
i is van’t Hoff factor
van’t Hoff factor, i: it is the relation between change in in freezing point measured and change in in freezing point calculated. It indicates the total number of ions that are produced.
Molality (m): Molality is the number of moles of solute present in one kilogram of solvent.
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Chapter 13 Solutions
Chemistry & Chemical Reactivity
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- A 0.029 M solution of potassium sulfate has an osmotic pressure of 1.79 atm at 25 C. (a) Calculate the vant Hoff factor, i, for this solution. (b) Would the vant Hoff factor be larger, smaller, or the same for a 0.050 M solution of this compound?arrow_forwardJuice (d=1.0g/mL) from freshly harvested grapes has about 24% sucrose by mass. What is the molality of sucrose, C12H22O11, in the grape juice after 25% (by mass) of the water content has been removed? Assume a volume of 15.0 L.arrow_forward
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