Calculate the theoretical yield of 2,3-dibromo-3-phenylpropanoic acid starting with 2.56g of trans-cinnamic acid (TCA). a. What volume of 1.2M bromine in acetic acid is required to fully convert the starting mass of TCA to 2,3-dibromo-3-phenylpropanoic acid when using a 10% excess of the bromine acetic acid solution? b. Given that calculated volume of 1.2M bromine in acetic acid from a) above, what mass of molecular bromine is available for the reaction? c. Explain why it might or might not be helpful to use an excess of bromine for this reaction based upon the reaction we used in lab.