Question

On complete combustion of ethane to its products, the hybridization of carbon :

• A. Remains the same.
• B. Changes from $s{p}^2$ to $s{p}^3$
• C. Changes from $s{p}^3$ to $s{p}^2$
• D. Changes from $s{p}^3$ to $sp$

Answer 1

The correct option is D Changes from $s{p}^3$ to $sp$

Complete combustion :
The process of heating a substance in the presence of sufficient air/$O_2$
The substance is completely oxidized to $C{O}_2$ and $H_{2}O$ accompanied by evolution of a large amount of heat.

The general reaction for complete combustion is :
$C_n{H}_{2n+2}+\frac{3n+1}{2}{O}_2⟶nC{O}_2+(n+1)H_{2}O+\text{Heat}$

Combustion reaction of ethane :
$C{H}_3-C{H}_3+\frac{7}{2}{O}_2⟶2C{O}_2+3H_{2}O+\text{Heat}$
Hybridization of carbon in ethane is $s{p}^3$
Hybridization of carbon in $C{O}_2$ is $sp$
Hence (d) is correct