HI BLOG,
I actually have FINISHED doing the experiments! No, I didn't forget to record everything here- it's all in video form and I will add all the videos as soon as possible. I also took photos so I'll post t hem up too.
Sooooo, I did the Salt experiment 5 times- which took forever!!!!!! Seriously, I sat and watched water boil for like 5 hours. I also did the sugar and baking soda 3 times which also took suppppperrrrr long. I didnt record the baking soda on video because it was taking a long time to boil but I do have the first attempt of it where the water totally came out of the top of the pot and I had to stop because it was going everywhere. Sooo I'll post them up soon too.
Right now, I am almost finished the full report so I want to complete that and then I will definately come back here and add all the things-i cant believe it but I actually do get stuff!!
LIKE what the boiling point actually is- IT IS NOT JUST WHEN THE WATER BOILS? NO! It's when the vapour pressure of the solution reaches an equilibrium with the surrounding atmospheric pressure so I get why when you add a non-volatile solute, the temperature rises because it has a vapour pressure of zero so when you add it to the solvent, the solution has the same vapour pressure as the solvent and because of the dilution from the solute, more kinetic energy of the molecules is needed for the solution's vapour pressure to reach the surrounding atmospheric pressure so it boils at a higher temperature. AND YOU WOULD NOT BELIEVE THAT I DIDNT EVEN LOOK AT ANYTHING WHILE I WROTE THAT? I WROTE IT ALL OFF THE TOP OF MY HEAD!! So, it took me ages to get that but I get it now....so now i will finish the report and add everything later.
Thursday, June 10, 2010
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment