CHEM 143A Chapter Notes - Chapter 6: Organic Compound, Flash Point, Chrysler 200C Ev

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If you forget to add boiling stones before heating, the liquid must be cooled well below the boiling point before putting boiling stones into it. If a liquid you have boiled requires cooling and reheating, an additional boiling stone should be added before reheating commences: magnetic stirring can also be used instead of boiling stones/sticks, stirring is a common method for preventing superheating. It cannot be used to boil any liquid with a boiling point above 100 c. 1: water vapor from the steam may contaminate your sample being heated on the steam bath unless special precautions are taken to exclude moisture. Oil baths: distillations of high-boiling liquids often need a heating bath of greater than. If any water gets into a mineral-oil heating bath, there is the danger of hot oil splattering out when the temperature exceeds. 100 c and the denser water begins to boil. Heat guns can get extremely hot and can easily cause severe burns.

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