1. Consider the reaction below. Which of these forms an acid-conjugate base
pair?
HNO3 + CO32- → HCO3¹+ NO3¹-

A. HNO3 and HCO3 1-
B. HNO3 and NO3 1-
C. CO3 2- and HCO3 1-
D. HCO3 1- and NO3 1-