Question: Predict the products (if any) of the following acid-base reactions.

1. formic acid + ammonia
2. terphthalic acid + excess NaOH
3. p-toluic acid + sodium trifluoroacetate
4. $\alpha$-chloropropionic acid + sodium propionate
5. benzoic acid + potassium phenoxide

a. In the reaction between formic acid (HCOOH) and ammonia (NH₃), formic acid is an acid, ammonia is a base, so ammonia accepts a proton and formic acid denotes a proton. The product formed is,

b. In the reaction between terephthalic acid and excess NaOH, terephthalic acid is an acid, and NaOH is a base. So, the loss of a proton from two COOH groups from terephthalic acid occurs, and two water molecules are formed. The product of the reaction is,

c. No reaction occurs when p-toluic acid (acid) reacts with sodium trifluoroacetate (salt).

d. When (acid) reacts with sodium propionate (salt), donates its one proton to sodium propionate, and sodium propionate accepts one proton and forms propanoic acid. The reaction is shown below,

e. When benzoic acid reacts with potassium phenoxide, benzoic acid donates its one proton to potassium phenoxide and forms PhCOO^-K⁺ .Phenoxide accepts one proton and forms phenol. The reaction is as follows,