Experiment!

Heating and Cooling Curves of a Pure Substance

(Wikipedia.com)

Today, we have done a fascinating lab which we cooling down the pure substance of dodecanoic acid(C₁₂H₂₄O₂ ). It is a white powder when the temperature is about 25 degree centigrade. When the process of cooling the substance is done for about 13 minutes. We started to go down to the heating process. The process that will melt the dodecanoic acid from solid state into the state of liquid again. The process of heat it up into liquid took about 9 minutes. The whole purpose of the experiment is to investigate the heating and the cooling process of liquid/solid dodecanoic acid and to determine and compare the melting and freezing points of dodecanoic acid.

Kevin Wang