What are the two chemical and physical tests to distinguish between saturated and unsaturated compounds???
Answers
Unsaturated compounds are organic-chemical compounds whose molecular structure contains one or more carbon-carbon double bonds or triple bonds. These can also be conjugated. Examples are the unsaturated fatty acids or unsaturated hydrocarbons (alkenes and alkynes). Many natural products are unsaturated compounds.
Unsaturated hydrocarbons are hydrocarbons that have double or triple covalent bonds between adjacent carbon atoms. Those with at least one carbon-to-carbon double bond are called alkenes and those with at least one carbon-to-carbon triple bond are called alkynes. The position of the double or triple bond is shown by a number written either at the start of the name, or just before the -ene or -yne suffix (e.g. pent-2-ene and 2-butyne). The number represents the position of the first of the two carbons making the bond, in the longest carbon chain. Alkenes and alkynes with more than one double or triple bond respectively are named with a prefix preceding the -ene or -yne (e.g. 2,4-pentadiene).
Unsaturated hydrocarbons with both double and triple bonds have the suffix -enyne and are handled in a similar manner.
The physical properties of unsaturated hydrocarbons are very similar to those of the corresponding saturated compounds. They are typically only sparingly soluble in water.
Except for aromatic compounds, unsaturated hydrocarbons are reactive and undergo addition reactions to their multiple bonds. Typical reagents added are hydrogen halides, water, sulfuric acid, elemental halogens, and alcohols.