Q.12 Geometrical isomer (text Q3.3)
Though the compound A which is one of the isomeric 13 or 14 lose 1 molecule of water and becomes maleic anhydride 15 when it is heated to circa 140℃, the other isomeric B shows no change at the same temperature and changes in 15 when heated to the circa 275℃ and water is lost. Estimate whether a compound A is 13 or 14.
