Draw the structural formula of ethane.

Draw the electron-dot structure of propane.

(i) Observe the compounds $\left(\mathrm{a}\right)$ to $\left(\mathrm{e}\right)$

(ii) Identify the compounds those contain a ring of carbon atoms only.

(iii) Identify the compounds in which ring contains at least one atom other than carbon.

Identify the compounds those contain a ring of carbon atoms only.

Identify the compounds in which ring contains at least one atom other than carbon.

Consider the following reaction:

$2{\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{OH} + 2\mathrm{Na}\to 2{\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{ONa} + {\mathrm{H}}_2$

Compare the structure of the substrate propanol with that of the product sodium propoxide. Which part of the substrate, the carbon skeleton, or the $\mathrm{OH}$ group has undergone a change during the reaction?