Question: is c2o4 an acid or base?
Answer: Oxalate(2-) is a dicarboxylic acid dianion obtained by deprotonation of both carboxy groups of oxalic acid. It has a role as a human metabolite and a plant metabolite. It is an oxalate and a dicarboxylic acid dianion. It is a conjugate base of an oxalate(1-).