TigerLily

I'm sorry about this. I wasn't asking you to do the homework for me, I was asking for help. I think I know #3. When a carboxylic acid comes in contact with a solution containing bicarbonate ion, carbon dioxide is generated. Would the formula for this be Cl-C6H5-COOH + NA+HCO3- >> Cl-C6H5-COO- NA+ + H2CO3 H2CO3 >> CO2 + H20 ? I don't really understand #1 and #2. For #1: Acidification protonates the carboxylic acid, but that's all I can think of so far. I'm not really sure what the equation would be for that. I don't know what to say about #2.

Hello. Can someone please help me with these organic chemistry lab questions? Thanks in advance. Here's the reaction: 4-Chlorobenzaldehyde + KOH,H+ >> 4-Chlorobenzyl alcohol + 4-Chlorobenzoic acid Purpose: This experiment illustrates the simultaneous oxidation and reduction of an aromatic aldehyde to form the corresponding benzoic acid and benzoyl alcohol. 1. In this experiment, the alkaline phase was diluted with water. Then it was acidified by concentrated hydrochloric acid. Discuss the acidification of the alkaline phase. How does it help in the isolation of the carboxylic acid product? Use an equation to help explain this point. 2. Think about the possibility of the alcohol product reacting with methanolic KOH. How would this effect the purity of the acid product? How could you tell if your acid product was contaminated in this way? Use an equation to help explain this. 3. Why is CO2 generated in the sodium bicarbonate test. Explain the evolution of CO2 in the bicarbonate test using an equation. Also, why do we perform chemical tests?