iPad 3:15 PM 81%- Exp. 2 Prelab Freezing Point Depression: Attempt 1 Question Co

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iPad 3:15 PM 81%- Exp. 2 Prelab Freezing Point Depression: Attempt 1 Question Completion Status: UESTION 5 Which of the following are colligative properties? (Choose all that apply) freezing point reduction vapor pressure reduction vapor pressure elevation freezing point elevation boiling point reduction boiling point elevation 2.00000 points Saved UESTION Why does the temperature rise slightly immediately after crystallization begins in a substance that is being cooled? O Crystallization is an exothermic process, so as a substance crystallizes its temperature will rise Crystallization is an endothermic process, so when it begins, the temperature drops lower than expected, then rises back up Solutions do not have a set freezing point and will vary with the composition. O A substance can be supercooled below its normal freezing point if crystallization has not been initiated. Once crvstallization begins, the temeprature returns to Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Close Window Save and Submit

Explanation / Answer

Colligative properties is defined as a property that depends upon number of solute particles present iin a solution to number of solvent molecules in a solution irrespective of the chemical nature of solute.

Like for example MgCl2 will dissociate 3 ion in solution , likewise CaCl2 will also dissociate 3 ion in solution so the colligative nature of both the species is same.

For a fact, vapour presure reduction, freezing point reduction, boiling point elevation are colligative properties.

I hope you have answered Q.6 as it is partially visible in the image.

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