In the Wacker process,what is the alkene converted into using $PdCl_2$?

In the reaction $CH_3CN + 2H \underset{\text{Ether}}{}$ ${\xrightarrow{HCl}} X$ $\xrightarrow{\text{Boiling } H_2O} Y$; the product $Y$ is

The sequence of reagents required to convert ethyl bromide to propanal is

Benzaldehyde can be prepared by the oxidation of toluene by:

$R-CN \xrightarrow[(ii) H_3O^{+}]{(i) SnCl_2 + HCl} R-CHO$
What is the name of the above reaction?

Give the chemical reactions for the following conversions:
$(1)$ Acetone from propene
$(2)$ Ethanal from $2-$bromobutane