P2O5 removes H2O from Alcohol to form Alkene O of Alcohol gives its lone pair to Higly e- defficient P of P2O5 O makes bond to P and breaks its bond to C atom P also breaks its Double bond with O which now works as a base and abstract H atom from C resulting in formation of an alkene Solution P2O5 removes H2O from Alcohol to form Alkene O of Alcohol gives its lone pair to Higly e- defficient P of P2O5 O makes bond to P and breaks its bond to C atom P also breaks its Double bond with O which now works as a base and abstract H atom from C resulting in formation of an alkene.