(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?
$C H_{3} - C H_{2} - B r$

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Solution

(a) Propanone ( $C H_{3} - O | | C - C H_{3}$ ) is one of the organic compounds comprising a ketone functional group $(- C O -) .$

(b) The general formula of chloroalkanes (haloalkanes) is $C_{n} H_{2 n + 1} - X$ (where, X is Cl, Br or I).

Therefore, the first three members of the chloroalkane series will be:
Chloromethane $(C H_{3} C l)$
Chloroethane $(C_{2} H_{5} C l)$
Chloropropane $(C_{3} H_{7} C l)$

(c) The name of the compound is bromoethane, as the structure has the parent alkane. It contains 2 carbon atoms, and its one hydrogen atom is replaced by a halo group (-X or bromine) atom. So, the name of the compound is bromoethane.

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Similar questions

Q. Given below are some organic compounds containing certain functional group.
i.

C H_{3} - C O O H

ii.

C H_{3} - C H_{2} - C H_{2} - O H

iii.

C H_{3} C H_{2} - C H_{2} . N H_{2}

iv.

C H_{3} - C H O

(a) Write the names of functional group of any of the two compounds given above.
(b) Write the IUPAC name of

C H_{3} - C H_{2} - C H_{2} - O H

.
(c) Give the structural formula and IUPAC name of functional group isomer of

C H_{3} - C H_{2} - C H_{2} - O H

Three organic compounds A, B and C have the following molecular formulae :
A $C_{4} H_{8} O_{2}$
B $C_{4} H_{10} O$
C $C_{4} H_{8} O$
(a) Which compound contains an alcohol group? Write its name and structural formula.
(b) Which compound contains a carboxyl group? Write its name and structural formula.
(c) Which molecular formula can represent an aldehyde as well as a ketone? Write the names and structural formulae of the aldehyde and ketone represented by this molecular formula.

Q. (a) Give the general name of the class of compounds having the general formula C_nH_2n₋₂. Write name of the first member of this homologous series.
(b) The general formula of a homologous series of carbon compounds if C_nH_2n. Write the molecular formulae 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 C_nH_2n₊₂

Q. Write formulae for the first five members of each homologous series beginning with the following compound,

H - C H = C H_{2}

{C H}_{3} - {C H}_{2} = {C H}_{2} - C H = {C H}_{2}

is an unsaturated hydrocarbon.
(a) To which homologous series this compound is a member?
(b) Write the general formula representing this homologous series.
(c) Write the structural formula of the member successive to this compound.

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(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

(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?
$C H_{3} - C H_{2} - B r$