Identify compound A and draw the reaction showing the dehydration of A to propene and the hydrogenation of propene to compound D.

i)

Step 1: A is dehydrated to form propene. Propene has 3 carbon atoms. Therefore, A is an alcohol with 3 carbon atoms.

$$\text{CH}_3\text{CH}_2\text{CH}_2\text{OH} \xrightarrow{\text{Al}_2\text{O}_3} \text{CH}_3\text{CH}=\text{CH}_2 + \text{H}_2\text{O}$$

So, A is propan-1-ol (or propan-2-ol).

Step 4: Propene is hydrogenated to form compound D.

CH_3CH=CH_2 + \