question_answer

The molecular formula of two carbon compounds are \[{{\mathbf{C}}_{\mathbf{4}}}{{\mathbf{H}}_{\mathbf{8}}}\] and \[{{\mathbf{C}}_{\mathbf{3}}}{{\mathbf{H}}_{\mathbf{8}}}\]. Which one of the two is most likely to show addition reaction? Justify your Ans. Also give the chemical equation to explain the process of addition reaction in this case.

Answer:

(i) \[{{C}_{4}}{{H}_{8}}\] : Butene-alkene (unsaturated hydro-carbon)

(ii) \[{{C}_{3}}{{H}_{8}}\] : propane-alkane (saturated hydrocarbon)

\[{{C}_{4}}{{H}_{8}}\] i.e. butene shows addition reaction as it is unsaturated hydrocarbon

\[H-\underset{\begin{smallmatrix}  | \\  H \end{smallmatrix}}{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}}\,-\underset{\begin{smallmatrix}  | \\  H \end{smallmatrix}}{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}}\,-\underset{{}}{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}}\,=\underset{{}}{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}}\,-H+C{{l}_{2}}\xrightarrow{{}}H-\underset{\begin{smallmatrix}  | \\  H \end{smallmatrix}}{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}}\,-\underset{\begin{smallmatrix}  | \\  H \end{smallmatrix}}{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}}\,-\underset{\begin{smallmatrix}  | \\  Cl \end{smallmatrix}}{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}}\,-\underset{\begin{smallmatrix}  | \\  Cl \end{smallmatrix}}{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}}\,-H\]