Question: are carboxylate salts soluble in water?
Answer: In general, the smaller the carboxylate carbon chain, the more soluble is the sodium salt of that carboxylic acid. ... The smallest chain carboxylates such as sodium formate (C1) and sodium acetate (C2) are extremely soluble in water, whereas very long chain sodium carboxylates (C12 - C18) are not very soluble at all.