The BrnstedLowry theory can be applied to acidbase reactions in nonaqueous solvents, where the relative strengths of

The Brønsted–Lowry theory can be applied to acid–base reactions in nonaqueous solvents, where the relative strengths of acids and bases can differ from what they are in aqueous solutions. Indicate whether each of the following would be an acid, a base, or amphiprotic in pure liquid acetic acid, CH₃COOH, as a solvent. 

(a) CH₃COO^-; 

(b) H₂O;

(c) CH₃COOH;

(d) HClO₄.