J.R. S. answered 03/17/24
Ph.D. University Professor with 10+ years Tutoring Experience
HO2C2O2H + H2O ==> H3O+ + -O2C2O2H
.....acid..........base.......conj.acid.....conj.base......
oxalic acid + water ==> hydronium ion + oxalate anion
....acid..........base..........conj. acid...........conj. base
Direction of reaction is forward