A polymer is hydrolyzed to give an acidic substance and a compound that was found to have properties of an alcohol. When this compound was oxidized, it produced an acid whose molecular mass was found to be 90.0 amu. A 0.145-g sample of this acid is completely neutralized with 30.5 mL of 0.1056 M NaOH to give a salt. The acid produced a white precipitate with calcium chloride. What was the precipitate that formed? Explain what is happening at each step.