Name the products formed and give appropriate chemical equations for the following:

(a) Sodium reacting with ethyl alcohol.

(b) Ethanol oxidised by acidified potassium dichromate.

(a) When sodium reacts with ethyl alcohol, hydrogen is produced, and sodium ethoxide is formed.

C₂H₅OH + 2Na ⟶ 2C₂H₅ONa + H₂ ↑

(b) Ethanol is oxidised and transformed to ethanal, which is then turned to acetic acid.

$\underset{ \text{ethanol}}{\text{C}$2\text{H}5\text{OH}} \xrightarrow[\text{K}2\text{Cr}2\text{O}7]{\text{[O]}} \underset{\text{ethanal}}{\text{CH}3\text{CHO}} \xrightarrow[\text{K}2\text{Cr}2\text{O}7]{\text{[O]}} \underset{\text{ethanoic acid}}{\text{CH}3\text{COOH}}