Posted by Amber on Thursday, September 29, 2011 at 4:42pm.
You need to apply the definition. I assume you are using the Bronsted-Lowry theory. Acids donate a proton; bases accept a proton.
H2C2O4, for example, can ONLY donate a proton (you know there is no such thing as H3C2O4 or H4C2O4) so it looks like this. H2C2O4 ==> H^+ + HC2O4^-. Another for example is that HC2O4^- can act as both an acid and a base. WHY? Because it can donate a H^+ as in HC2O4^- ==> H^+ + C2O4^2- (the fact that H^+ and C2O4^2- are listed in the same question should tell you that those exist so it can go to the right and act as an acid OR it can do HC2O4^- + H^+ ==> H2C2O4 and act as a base.) That takes care of two of them; I'll leave the other two for you.
Related Questions
chemistry - oxalic acid, h2c2o4, is a weak acid capable of providing two H3O+ ...
chemistry - Oxalic acid (H2C2O4) can be used to remove rust according to the ...
chemistry - Oxalic acid (H2C2O4) can be used to remove rust according to the ...
Chemistry - What is the mole of oxalic acid? Equation:H2C2O4 + 2NaOH---> ...
college Chemistry - What is the mole of oxalic acid? Equation:H2C2O4 + 2NaOH---&...
Chemistry - What mass of oxalic acid dihydrate , H2C2O4•2H2O, is required ...
applied chemistry - a 69.3g sample of oxalic ac acid, H2C2O4, was dissolved in 1...
chemistry - A solution is prepared by dissolving 0.5842g of oxalic acid (H2C2O4...
Chemistry - 20.5 mL of oxalic acid,H2C2O4 were titrated with 0.800 M solution of...
Chemistry - You have a solution that contains 5.0 grams of oxalic acid dissolved...
For Further Reading
