text: The mercuric salt of this ion is used for oxymercuration. Like borate, Tris bonds this ion in a commonbuffer for electrophoresis.
full_question: The mercuric salt of this ion is used for oxymercuration. Like borate, Tris bonds this ion in a commonbuffer for electrophoresis. This ion is the smallest short-chain fatty acid. This ion, which has a conjugatepKa of 4.76, is a much weaker base than ethoxide, as shown in a common classroom example of resonancestability. Cellulose esters are almost always made to this group, which is added to salicylic acid to make(*) aspirin. Like nitrate, chlorate, and perchlorate, all salts of this anion are water-soluble. Adding vinegar tobicarbonate makes carbonic acid and this ion. This carboxylate has two carbon atoms. For 10 points, name this ionwith formula CH3COO minus, the conjugate base of acetic acid.
first_sentence: The mercuric salt of this ion is used for oxymercuration. Like borate, Tris bonds this ion in a commonbuffer for electrophoresis.
raw_answer: acetate [or acetyl group; or acetoxy group; do not accept or prompt on "acetic acid"] 