Citral is present in lemongrass oil. It may react to form compound W. Citral $\xrightarrow[\text{an excess of }\text{H}_2/\text{Ni}]{}$ V $\xrightarrow[\text{hot, concentrated acidified manganate(VII) under reflux}]{}$ W What might compound W be?
Chemistry 9701 · AS & A Level · Carboxylic acids and derivatives