Difference between revisions of "Colligative Properties Exp"

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(Created page with "[https://en.wikipedia.org/wiki/Colligative_properties Colligative Properties] include: :- Boiling point elevation :- Freezing point depression :- vapor pressure decrease :- os...")
 
 
(4 intermediate revisions by the same user not shown)
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Chemical principles:
 
Chemical principles:
: - molality (m) = moles of solute/kg solvent [similar to molarity (M)]
+
:- molality (m) = moles of solute/kg solvent [similar to molarity (M)]
 +
:- cryoscopic constant (k<sub>f</sub> = ...for freezing, k<sub>b</sub> = ...for boiling) (see list [https://en.wikipedia.org/wiki/List_of_boiling_and_freezing_information_of_solvents here])
 +
:- van't Hoff factor = an integer value indicating the number of solute particles resulting.
 +
:- ΔT = k<sub>f</sub> or k<sub>b</sub> * m * i
  
 
Demonstration:
 
Demonstration:
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Experiment:
 
Experiment:
:- temperature of various salt water solutions.
+
:- temperature (T) of various salt water solutions (m).
 +
:- Graph data (m vs T), trendline/linear regression fit, determine cryogenic constant k<sub>f</sub>, and print and turn in to instructor.

Latest revision as of 16:57, 21 August 2020

Colligative Properties include:

- Boiling point elevation
- Freezing point depression
- vapor pressure decrease
- osmotic pressure alteration

Chemical principles:

- molality (m) = moles of solute/kg solvent [similar to molarity (M)]
- cryoscopic constant (kf = ...for freezing, kb = ...for boiling) (see list here)
- van't Hoff factor = an integer value indicating the number of solute particles resulting.
- ΔT = kf or kb * m * i

Demonstration:

- Seltzer water...

Experiment:

- temperature (T) of various salt water solutions (m).
- Graph data (m vs T), trendline/linear regression fit, determine cryogenic constant kf, and print and turn in to instructor.