Which compounds yield hydrogen ions as the only positive ions in an aqueous solution?
(1) H2CO3 and HC2H3O2
(2) H2CO3 and NaHCO3
(3) NH3 and HC2H3O2
(4) NH3 and NaHCO3
The answer is (1) H2CO3 and HC2H3O2. For NaHCO3, there will be Na+ as positive ion. For NH3, there will be NH4+ as positive ion. For H2CO3 and HC2H3O2, there will be H+ as only positive ion.
