Chemistry
Answer
Isomerism is the phenomenon due to which two or more compounds have the same molecular formula but differ in molecular arrangement or in structural formula.
Two main causes of isomerism are:
- Difference is the mode of linking of atoms.
- Difference in the arrangement of atoms or groups in space.
Related Questions
Fill in the blanks.
(a) Propane and ethane are …………… (homologous, isomers)
(b) A saturated hydrocarbon does not participate in a/an …………… reaction (substitution, addition)
(c) Succeeding members of a homologous series differ by …………… (CH, CH2, CH3)
(d) As the molecular masses of hydrocarbons increase, their boiling points …………… and melting points …………… (increase, decrease)
(e) C25H52 and C50H102 belong to …………… homologous series (the same, different)
(f) CO is an …………… compound. (organic, inorganic)
(g) The chemical properties of an organic compound are largely decided by the …………… and the physical properties of an organic compound are largely decided by the …………… (functional group, number of carbon atoms)
(h) CHO is the functional group of an …………… (alcohol, aldehyde)
(i) The root in the IUPAC name of an organic compound depends upon the number of carbon atoms in …………… (any chain, principal chain)
(j) But-1-ene and but-2-ene are examples of …………… isomerism (chain, position, functional)
Define or explain chain isomerism and position isomerism with examples in each case.
Draw the chain isomers of hexane (C6H14).
Draw position isomers of butene (C4H8)