Wednesday, May 11, 2011

May 11th, 2011

     Today when we went to class, we immediately put on our safety gear, consisting of goggles, gloves, and an apron. As soon as we put them on, it was like a snap when we got to work. Out of our 14 people in the classroom, Miss Rioux assigned different people different tasks while we were all participating in today's lab. My group had to get the petri dishes (14 of them), and measure them using sodium hydroxide until it was exactly at 12 grams using the Triple Beam Balance Scale. After we measured 14 petri dishes of sodium hydroxide, we had to put them 250 mL of methanol.

     We put the sodium hydroxide pellets carefully into the methanol. Then we closed the container of the mixture and shook it until all of the pellets created a foggy water. After that, we had to get our two litter bottles and poured oil halfway so we still had 1 liter. Then, we put the "foggy water" into our oil, and that created a white layer. Next, we had to flip the bottle over about 4 times, and then we just placed it faced down on top of a beaker. We have to wait about 12-24 hours before we can do anything else.

1 comment:

  1. I was in the methanol group!It takes LONG time for me to make the pellet to dissolves. I felt like im working out! I was mad because I work so hard for the pellet to dissolve, but I still have this oil fats on top of the surface. What a bad result... Hopefully yours work!

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