Be sure to answer all parts. oxalic acid (h2c2o4) has the structure: h5oxalicacid an oxalic acid solution contains the following species in varying concentrations: h2c2o4, hc2o4−, c2o42−, and h+ (a) draw lewis structures of hc2o4− and c2o42−. include lone pair electrons and any formal charges in your drawings. hc2o4− draw structure c2o42− draw structure (b) which of the above 4 species can act only as acids, which can act only as bases, and which can act as both acids and bases? only acid h2c2o4 hc2o4− c2o42− h+ only base h2c2o4 hc2o4− c2o42− h+ both acid and base h2c2o4 hc2o4− c2o42− h+