Organic compounds have to be purified before analysis. Which type of liquids can be purified using distil lation under reduced pressure? Suggest an example.

Briefly describe the principles of the followig techniques, taking an example in each case. Distillation under reduced pressure

Different methods are used to purify organic compounds. Name any three methods of purification.

The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter noble gases are due to the weak dispersion forces between the atoms and the absence of other interatomic interactions, The direct reaction of xenon with fluorine leads to a series of compounds with oxidation numbers +2, 4 and +6, XeF_4 reacts violently with water to give XeO_3 . The compouds of xenon exhibit rich stereochemistry and their geometries can be deduced considering the total number of electron pairs in the valence shell. Argon is used in arc welding because of its

Many minerals are present in ordinary water. Distillation is the method that can be used to remove the minerals and obtain pure water. Water purified by this method is distilled water Write two instances of its use.