Question

Next homologue ofC2H5Br is

Answer 1

Answer:

C3H7Br

Explanation:

Each member of the homologous series differs from the preceding one by the addition of CH2 group. Hence,whenever you are to find next homologoue just add CH2 group and if you are to find previous homologoue then reduce one CH2.

Answer 2

Answer and Explanation:

$\diamond$ $\huge \text{\boxed{\boxed{\mathcal{HOMOLOGOUS \ SERIES}}}}$

$\implies$ Homologous series is a group or sequence of compounds which have same functional group and same chemical properties

$\implies$ Homologous have different properties

$\implies$ These properties are :

1. Can be represented by a general formula
2. Have same functional group
3. Successive members differ by a CH₂ group that is differ by a molecular mass of 14g
4. Have similar chemical properties
5. There is gradual increase in boiling point, melting point and density

$\implies$ Examples of different homologous series are :

1. Alcohols
2. Ketones
3. Haloalkanes
4. Alkanes
5. Alkenes
6. Alkynes

$\implies$ The given example of C₂H₅ - Br belongs to the homologous series haloalkanes

$\implies$ Since, successive members differ by CH₂

Next homologue of C₂H₅ - Br will be

C₂H₅ - Br + CH₂ = C₃H₇ - Br

$\implies$ Therefore, next homologue after C₂H₅ - Br will be C₃H₇ - Br