9:49 Tue, 27 Aug 4 Primer Tutorial 3-answers-student-1.docx Saved on device 5 Calibri 14 B I U A = &༢% 64% + Q + Share 4. Butanoic acid is a weak acid and will partially ionise in water to form the butanoate anion. Complete the reaction below by drawing the two possible structures for butanoate anion. The butanoate anion does not exist as either of these structures, but as a hybrid of the two structures (right) where the negative charge is shared over the two C-O bonds. The two structures of the butanoate anion are called resonance structures. 5. A solution of benzoic acid and naphthalene was dissolved in an organic solvent and poured into a separating funnel. An aqueous solution of NaOH is added to the separating funnel the flask is shaken and the lavers allowed to senarate as shown in the diagram 00 27 > M III A <