- The carboxy group is _(blank)_ and forms hydrogen-bonded dimers.
- Dicarboxylic acids react with _(blank)_ to give imides.
- Chemical Abstracts and the IUPAC both retain the common names for the two simplest, _(blank)_ and _(blank)_ acids.
- _(blank)_ acid is employed in the tanning process in the manufacture of leather and in farming as a preservative for hay and animal feeds in silos, as well as to kill mites.
- _(blank)_ of primary alcohols and of aldehydes furnishes carboxylic acids.
- The hydroxy group in COOH can be replaced by _(blank)_ by using the same reagents used to convert alcohols into haloalkanes—SOCl2 and PBr3.
- The NMR signals for carboxylic acids reveal _(blank)_ deshielded acid protons and carbonyl carbons and moderately deshielded nuclei next to the functional group.
- A _(blank)_ is transformed into the carboxylic acid containing one additional carbon atom either by conversion into an organometallic reagent and carbonation or by displacement of halide by cyanide followed by nitrile hydrolysis.
- As we have learned from our study of aldehydes and ketones, carbonyl carbons are _(blank)_ and can be attacked by nucleophiles.
- Acyl halides are formed by using _(blank)_ derivatives of carboxylic acids.