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"))underset(H)underset(|)overset(OH)overset(|)(CH_3-C-H)overset(Cu//573K)underset(-H_2)rarrunderset("Ethanal")(CH_3-overset(O)overset(||)C-H+H_2)`
(ii) `underset((2^@ "alcohol)Propan-2-ol"))underset(CH_3)underset(|)overset(OH)overset(|)(CH_3-C-H)overset(Cu//573K)underset(-H_2)rarrunderset("Acetone")underset("or")underset("Propan -2-one")(CH_3-overset(O)overset(||)C-CH_3+H_2`
(iii) `underset((3^@ "alcohol"))underset("2- Methyl propan -2-ol")underset(CH_3)underset(|)overset(OH)overset(|)(CH_2-C-CH_3)overset(Cu//573K)underset(-H_2)rarrunderset("2- Methyl propene")(CH_3-underset(CH_3)underset(|)C=CH_2+H_2O`