Chemistry
State five differences between the characteristics of organic and inorganic compounds. State how organic compounds are classified.
Answer
Five differences between the characteristics of organic and inorganic compounds:
Characteristic | Organic Compound | Inorganic Compound |
---|---|---|
Presence of carbon | Carbon is a necessary element in every organic compound. | Carbon is not an essential element in inorganic compounds. |
Solubility in water | They generally do not dissolve in water. | They generally dissolve in water. |
Solubility in organic solvents | They dissolve in organic solvents like alcohol, benzene and chloroform. | All inorganic compounds do not dissolve in organic solvents. |
Melting and boiling point | They have low m.p. and b.p. and easily decompose on heating. | They have high m.p. and b.p. and usually do not decompose on heating. |
Bonding | They form covalent bonds. | Most of them form ionic bonds. |
Classification of organic compounds:
Aliphatic : Open chain compounds | Cyclic : Closed chain compounds |
---|---|
Hydrocarbons [compounds containing C & H only] | Homocyclic - [only C atoms] e.g., Aromatic compounds: Benzene |
(a) Saturated - Alkanes e.g., Ethane | Heterocyclic [C,O,N,S atoms] e.g., Aromatic compounds - Pyridine |
(b) Unsaturated - Alkenes e.g., Ethene, Alkynes e.g., Ethyne |
Related Questions
Differentiate between — 'Molecular formula' and 'Structural formula' — of an organic compound. Write the 'condensed structural formula' and 'branched structural formula' of ethene.
Explain the 'unique nature of carbon atom' with reference to —
(a) 'Tetravalency' — of carbon
(b) 'Catenation' — leading to formation of single, double and triple bonds and straight chain, branched chain and cyclic compounds.State reasons for 'Justification of a separate branch' for 'Organic Chemistry'.
Explain the term 'Homologous series'. State the general characteristics of members of the series with special reference to molecular mass or molecular formula.