Acidified \(K _{2} Cr _{2} O _{7}\) oxidizes primary alkanol to alkanal and then to alkanoic acidcidified \(K _{2} C\) kanone only.
It has no effect on tertiary \(\left(3^{\circ}\right)\) alkanol
\(RCHR ^{\prime} \stackrel{\frac{ K , Cr , O , O }{\longrightarrow}}{\longrightarrow}\) No reaction
\(3^{\circ}\) alkanol
\(CH _{3} CH _{2} CH ( OH ) CH _{3}\) is a secondary alkanol (Butan - \(2-\)
ol) which will be oxidized to butanone.
\(CH _{3} CH _{2} CH _{2} OH\) is a primary alkanol
(butan \(-1- ol\) )
that is oxidized to butanal
\(\left( CH _{3} CH _{2} H _{2} CHO \right)\)
\(CH _{3} CH _{2} CH _{2} C \left( CH _{3}\right)( OH ) CH _{3}\) is a tertiaryalkanol (2 methylpentan \(-2-01)\) which does not undergo oxidation with acidified \(K _{2} Cr _{2} O _{7}\).