Maleic acid and fumaric acid are isomers that contain polar bonds. Maleic acid is use in the pharmaceutical and adhesives industries. Fumaric acid plays a central role in the citric acid cycle in the cell. Molecules like these have dipole moments if they contain polar bonds and vector addition of these bond dipoles leads to an overall dipole. Explain why maleic acid has a dipole moment whereas fumaric acid does not. Make a clear claim about these structures. Briefly state the evidence for your claim, and relate the evidence you present clearly to your explanation.
