Answer:
The product of the reaction is Butanoic acid
Explanation:
This reaction of 1-butanol with K2Cr2O7, H2SO4, heat is an oxidation reaction. 1- Butanol is a primary alcohol which will oxidize partially to Butanal and then into Butanoic acid.
CH3CH2CH2CH2OH ⇒ CH3CH2CH2COOH.
Butanol Butanoic acid
(please find the attached document containing the diagram of the orgainic product)