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a) Carbonate ion is either a Brønsted-Lowry acid or a Brønsted-Lowry base. If it

ID: 990911 • Letter: A

Question

a) Carbonate ion is either a Brønsted-Lowry acid or a Brønsted-Lowry base. If it is an acid, what is it's conjugate base? On the other hand, if it is a base what is it's conjugate acid?
(hint: remember, your answers are case sensitive. Indicate superscripts, if any, by using the carat "^" symbol. For example, sulfate would be entered SO4^2- , permanganate as MnO4^- , and ammonium ion as NH4^+)

b)Perchloric acid is either a Brønsted-Lowry acid or a Brønsted-Lowry base. If it is an acid, what is it's conjugate base? On the other hand, if it is a base what is it's conjugate acid?
(hint: the hints noted in the previous question also apply here.)

c)Phosphate ion is either a Brønsted-Lowry acid or a Brønsted-Lowry base. If it is an acid, what is it's conjugate base? On the other hand, if it is a base what is it's conjugate acid?

d)H2C2O4 is either a Brønsted-Lowry acid or a Brønsted-Lowry base. If it is an acid, what is it's conjugate base? On the other hand, if it is a base what is it's conjugate acid?

Explanation / Answer

a) carbonate ion (CO3^2-) is a base its conjucate acid is HCO3^-

b) Perchloric acid (HClO4) is a acid its conjucate base is ClO4^-

c) phosphate ion (PO4^3-) is a base its conjucate acid is HPO4^2-

d) H2C2O4 is acid its conjucate base is H1C2O4^-