WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.
-
Upload
kelly-parsons -
Category
Documents
-
view
218 -
download
1
Transcript of WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.
![Page 1: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/1.jpg)
WHAT ARE THE FACTORS THAT
AFFECT THE SOLUBILITY OF
SDSA PRESENTATION BY: LYNDSEY, JORDY AND JEN
![Page 2: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/2.jpg)
RESEARCH QUESTIONS
1. How does the polarity of the solvent affect the solubility of the solute?
2. How does the temperature of the solvent affect the solubility of the solute?
![Page 3: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/3.jpg)
VARIABLES
Dependent Variables
Degree of solubility
Independent Variables
Temperature
Polarity of Solvent
Controlled Variables
Mass of Solute
Volume of Solvent
Sample Solute
Time
![Page 4: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/4.jpg)
SODIUM DODECYL SULFATE (SDS)
Non-Polar Polar
• Anionic surfactant• Amphiphilic• Lowers the surface tension of aqueous
solutions• Used primarily in: soaps and detergents
![Page 5: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/5.jpg)
THE SOLVENTS
1. Water
• Strongly Polar Solution
2. Isopropyl Alcohol
• Polar Solution
3. Vegetable Oil
• Non-Polar Solution
![Page 6: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/6.jpg)
WHAT IS “SOLUBLE”?
• Dissociation of salt
• Lack of visible crystals
• 1g dissolves in 100mL
![Page 7: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/7.jpg)
METHOD
• 100mL of solvent (water, isopropyl alcohol or vegetable oil) was measured into a 400 mL beaker that contained a stir bar
• The solvent was cooled/heated to the desired temperature
• 1 g of SDS was added to the beaker
• The solution was allowed to stir for 30s
• After 30s the solution was examined to determine if there was a homogeneous mixture
![Page 8: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/8.jpg)
RESULTS
Temperature 4°C RT 40°C 70°C
Water Insoluble Soluble Soluble Soluble
Vegetable Oil Insoluble Insoluble Insoluble Insoluble
Isopropanol Soluble Soluble Soluble Soluble
![Page 9: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/9.jpg)
OBSERVATIONS: WATER
Temperature: 4°CInsoluble
Room TemperatureSoluble
![Page 10: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/10.jpg)
OBSERVATIONS: WATER
Temperature: 40°CSoluble
Temperature: 70°CSoluble
![Page 11: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/11.jpg)
OBSERVATIONS: ISOPROPYL ALCOHOL
Temperature: 4°CSoluble
Room TemperatureSoluble
![Page 12: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/12.jpg)
OBSERVATIONS: ISOPROPYL ALCOHOL
Temperature: 40°CSoluble
Temperature: 70°CSoluble
![Page 13: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/13.jpg)
OBSERVATIONS: VEGETABLE OIL
Temperature: 4°CInsoluble
Room TemperatureInsoluble
![Page 14: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/14.jpg)
OBSERVATIONS: VEGETABLE OIL
Temperature: 40°CInsoluble
Temperature: 70°CInsoluble
![Page 15: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/15.jpg)
ANALYSIS: COMMON TRENDS
• The solubility of SDS in a nonpolar solution was independent of the temperature of the solution
• No clear trends were visible for polar solutions due to insufficient data
• SDS is mostly soluble in polar solutions
• SDS is insoluble in nonpolar solutions
![Page 16: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/16.jpg)
SOURCES OF ERROR
• Errors associated with measurement
• Inconsistent room temperature
• Inconsistent stirring speed
• Production of bubbles from surfactant
• Influences the solubility determination
![Page 17: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/17.jpg)
IMPROVEMENTS
• Require: Quantitative Analysis
• Determine the maximum concentration of the solute able to dissolve in the solvent at the given temperature
• Better regulation of temperature
• Purity of Solvent
• Investigation of Common Ion Effect by way of different solvents
![Page 18: WHAT ARE THE FACTORS THAT AFFECT THE SOLUBILITY OF SDS A PRESENTATION BY: LYNDSEY, JORDY AND JEN.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3053/html5/thumbnails/18.jpg)
CONCLUSION
• SDS is soluble in polar solutions at a variety of temperatures
• SDS is insoluble in nonpolar solutions
• The structural properties of isopropyl alcohol contain polar and nonpolar ends allowing it to associate with the amphiphilic properties of SDS resulting in a lack of bubbles