Question

What is the conjugate base of \(H_2CO_3\) according to the Bronsted-Lowry theory?

• A. \(CO_3^{2-}\)
• B. \(HCO_3^-\)
• C. \(H_3CO_3^+\)
• D. \(CO_2\)

Hint:

A conjugate base is formed when an acid loses a proton.

Answer 1

The Correct Option is B

The conjugate base of an acid is what remains after the acid donates a proton. In this case, \(H_2CO_3\) (carbonic acid) donates a proton to become \(HCO_3^-\), which is the conjugate base. Thus, the correct answer is (b).