What happens when `1^@`, `2^@` and `3^@` alcohols are passed over red hot copper ? Give equations.

Explanation

When vapours of `1^@, 2^@` and `3^@` alcohols are passed over red hot copper at 573 K then aldehydes, Ketones and alkenes are formed respectively.
(i) `underset("Ethanol"(1^@" alcohol"))(CH_3-underset(H)underset(|)overset(OH)overset(|)C-H) underset(-H_2)overset(Cu//573K)to underset("Ethanal")(CH_3-overset(O)overset(||)C-H)+H_2`
(ii) `underset((2^@" alcohol")" Propan-2-ol")(CH_3-underset(CH_3)underset(|)overset(OH)overset(|)C-H) underset(-H_2)overset(Cu//573K)to underset("Acetone")underset("or")underset("Propan-2-one")(CH_3-overset(O)overset(||)C-CH_3)+H_2`
(iii) `underset?((3^@" alcohol"))underset("2-Methyl propene")underset("2-Methyl propan-2-ol")(CH_2-underset(CH_3)underset(|)overset(OH)overset(|)C-CH_3) underset(-H_2)overset(Cu//573K)to CH_3-underset(CH_3)underset(|)C=CH_2+H_2O`