Lab number 2 ~ Exploring the process of heating and cooling

Hmm After a whole month of waiting, we FINALLY did a more interesting lab Observing the cooling and heating of Dodeconoic acid. First what is Dodeconoic acid? When we smelled it felt like it is some really dangerous stuff but Dodeconoic acid is just some coconut oil... haha I should of expected it to be something really house hold. So basically we could of drank some of those acid and still be perfectly okay. Each group had 2 people one looking at the thermometer every 30 sec and the other recording the readings.

This is the chemical compound of Dodecanoic acid

Of course we started our lab with safety glasses (Safety First) and as Ms Chen went over what we need to get we quickly started our lab. At first we have to cool the Acid because the class before us have already heated the acid to 50C. We got a beaker of cold water and placed the Acid solution inside. As minutes go by a thin layer of white stuff formed on the thermometer. Then as the temperature went down the whole solution become a white solid (Just in case the coconut acid explode we all wore safety glasses for the whole time) which was pretty amazing to some of our classmates... but to me, who have seen like everything, it just looked like another wonder of nature. I asume the process of cooling went pretty well with everyone in the class because most people moved on to heating at about the same time.

Heating also didn't seem like much trouble, we got our hot water from ms Chen with our beaker. Well all we really did was to put the acid solution back in the water and let the magic happen. We had to wait untill the acid is heated back to 50C. I though the heating of the acid was a lot faster than the cooling probably because we had really hot water.

Awhile later we all cleaned up and started on our lab report and graphs.

That was pretty much our day~ and next class we are going to finish our graphs and lab report.