H3O1+ + Cl1acid base c.acid c.base Practice problems: 1. What is the conjugate acid of each base? A) HPO42- _______ b) OH1- ________ c) NH3 ________ d) HSO41- ________ 2. What is the conjugate base of each acid? A) H2CO3 ________ b) HPO42- ______ 1+ c) H3O ________ d) HNO2 _______ II. Relative acid/base strength: Strong acids have weak (stable) conjugate bases. How can we stabilize conjugate bases? A) The negative charge of the base is stabilized by a larger ion.