(a) Give the names and structural formulae of the next two higher homologues of methane.
(b) The molecular formula of a hydrocarbon is C10H18. Name its homologous series.
(c) Select the hydrocarbons which are members of the same homologous series. Give the name of each series.
C5H10 ; C3H8 ; C6H10 ; C4H10 ; C7H12 ; C8H16.
The next two higher homologues of methane are ethane and propane.
Ethane
(b) The molecular formula of a hydrocarbon is C10H18. Its homologous series is Alkyne (CnH2n-2).
(c) The hydrocarbons which are members of the same homologous series are:
Alkanes: C3H8, C4H10
Alkenes: C5H10, C8H16
Alkynes: C6H10, C7H12
Related Articles
- (a) What is homologous series? Explain with an example.(b) State two characteristics of a homologous series. (c) The molecular formula of an organic compound is C18H36. Name its homologous series. (d) Select the hydrocarbons which belong to the same homologous series. Give the name of each series. CH4, C2H2 ,C3H4 ,C2H6 ,C4H10, C3H4, C3H6 . (e) What is meant by 'heteroatom'? Give examples. Write the names and formulae of two organic compounds containing different heteroatoms.
- (a) Define a homologous series. Give the name and structural formula of one homologue of the following: CH3OH.(b) Write the molecular formula of the third member of the homologous series of carbon compounds with general formula CnH2n+ 1OH. (c) Name any two fossil fuels.
- (a) Give the general name of the class of compounds having the general formula CnH2n-2 Write the name of the first member of this homologous series.(b) The general formula of a homologous series of carbon compounds is CnH2n. Write the molecular formula of the second and fourth members of the series. (c) Write the molecular formulae of the third and fifth members of homologous series of carbon compounds represented by the general formula CnH2n+2.
- C3H8 belongs to the homologous series of
- Write the molecular formula of first two members of homologous series having functional group -Br.
- Write the molecular formula of the 2nd and the 3rd member of the homologous series whose first member is methane.
- A colourless organic liquid X of molecular formula C2H4O2 turns blue litmus to red. Another colourless organic liquid Y of molecular formula C3H6O has no action on any litmus but it is used as a nail polish remover. A yet another colourless organic liquid Z of molecular formula C2H6O has also no action on litmus but it is used in tincture of iodine.(a) Name the liquid X. To which homologous series does it belong? Give the name of another member of this homologous series. (b) Name the liquid Y. To which homologous series does it belong? Write the name of another member of this homologous series. (c) Can you name an organic compound having the same molecular formula as liquid Y but which belongs to a different homologous series? What is this homologous series? (d) Name the liquid Z. To which homologous series does it belong? Write the name of another member of this homologous series.
- Write the molecular formula of the 2nd and 3rd members of the homologous series where the first member is ethyne.
- Which of the following belongs to the same homologous series? C3H8, C4H8, C4H6, C3H6
- (a) Write the name and formula of an organic compound containing a ketone functional group.(b) Write the names and formulae for the first three members of the homologous series of chloroalkanes. (c) How would you name the following compound? CH3-CH2-Br
- Write the molecular formula of the 2nd and 3rd member of the homologous series where the first member is ethyne.
- Write the IUPAC names, common names, and formulae of the first two members of the homologous carboxylic acids.
- (a) What are hydrocarbons? Explain with examples.(b) Explain the meaning of saturated and unsaturated hydrocarbons with two examples each. (c) Give the names and structural formulae of one saturated cyclic hydrocarbon and one unsaturated cyclic hydrocarbon. (d) Give one example of a hydrocarbon, other than pentane, having more than three isomers. (e) How many isomers of the following hydrocarbons are possible? (i) C3H8 (ii) C4H10 (iii) C5H12 (iv) C6H14
- Which of the following does not belong to the same homologous series?CH4C2H6C3H8C4H8
- Molecular formula of a hydrocarbon is C3H8. Draw its complete structure and write its name.
Kickstart Your Career
Get certified by completing the course
Get Started