User:Mobeen Ashraf/Notebook/Chem-581/2012/09/19: Difference between revisions
(→Notes) |
|||
Line 16: | Line 16: | ||
Part I | Part I | ||
In a 100 ml of water solution, 20 g of sodium sulfate was placed. Once the solution was dissolved, 2 ml of the concentrated sulfuric acid was added. The resultant mixture was allowed to reach at the temperature of 70 deg Celsius before adding 0.1 g of PVOH having the molar mass of 22,000 cross-linked with glutaraldehyde film. When 1 hour was elapsed, the film was taken out of the solution and was rinsed several times with distilled water before it was placed in to 1% aqueous hydrochloric acid solution for half hour.0.2 M sodium | In a 100 ml of water solution, 20 g of sodium sulfate was placed. Once the solution was dissolved, 2 ml of the concentrated sulfuric acid was added. The resultant mixture was allowed to reach at the temperature of 70 deg Celsius before adding 0.1 g of PVOH having the molar mass of 22,000 cross-linked with glutaraldehyde film. When 1 hour was elapsed, the film was taken out of the solution and was rinsed several times with distilled water before it was placed in to 1% aqueous hydrochloric acid solution for half hour.0.2 M sodium bicarbonate (NaHCO3) solution was prepared in a separate beaker and after about half hour, the film, treated with 1% HCl solution was placed in sodium carbonate solution for 15 mins. That process was taken place inside the fume hood on a hot plate, with no heat or stirring involved. | ||
Part II | Part II | ||
Line 24: | Line 24: | ||
Part I | Part I | ||
Calculating The Mass of Sodium | Calculating The Mass of Sodium Bicarbonate: | ||
(0.2 mol | (0.2 mol NaHCO3/L) * (1 L/1,000 ml) * (200 ml) * (84.007 g Na2CO3/1mol NaHCO3) | ||
= | = 3.36 g NaHCO3 (sodium bicarbonate). | ||
==Data== | ==Data== |
Revision as of 15:45, 14 October 2012
Experimental Chemistry | <html><img src="/images/9/94/Report.png" border="0" /></html> Main project page <html><img src="/images/c/c3/Resultset_previous.png" border="0" /></html>Previous entry<html> </html>Next entry<html><img src="/images/5/5c/Resultset_next.png" border="0" /></html> |
ObjectiveAcid Catalytic Dehydration reaction in cross-linking of glutaraldehyde, solubility tests of the resultant film, swelling studies and neutralization of films in sodium carbonate solution. DescriptionPart I In a 100 ml of water solution, 20 g of sodium sulfate was placed. Once the solution was dissolved, 2 ml of the concentrated sulfuric acid was added. The resultant mixture was allowed to reach at the temperature of 70 deg Celsius before adding 0.1 g of PVOH having the molar mass of 22,000 cross-linked with glutaraldehyde film. When 1 hour was elapsed, the film was taken out of the solution and was rinsed several times with distilled water before it was placed in to 1% aqueous hydrochloric acid solution for half hour.0.2 M sodium bicarbonate (NaHCO3) solution was prepared in a separate beaker and after about half hour, the film, treated with 1% HCl solution was placed in sodium carbonate solution for 15 mins. That process was taken place inside the fume hood on a hot plate, with no heat or stirring involved. Part II Another PVOH (MW of 22,000) film was prepared in 5 ml deionized water solution. After PVOH was dissolved in water, 1 ml of glutaraldehyde was added to the resultant mixture and the entire mixture was then placed in to Teflon plate. The solution was finally allowed to dry inside the fume hood. Part I Calculating The Mass of Sodium Bicarbonate: (0.2 mol NaHCO3/L) * (1 L/1,000 ml) * (200 ml) * (84.007 g Na2CO3/1mol NaHCO3) = 3.36 g NaHCO3 (sodium bicarbonate). Data
NotesIt was noticed that the film with lower molecular mass i.e., 22,000 MW is slightly thinner than the film with higher molecular mass i.e., 100,000.
|