Consider the bronsted-lowry reactions taking place in these solutions. Indicate the type of Bronsted-Lowry species that characterizes the acid-base chemistry of the referenced solution. Then, provide the appropriate chemcial equation that includes this important reacting species.
1) acetic acid:
2) an aqueous solution of sodium sulfide
3) a saturated aqueous solution of "insolubke" calcium fluoride
4) an aqueous solution of ammonium nitrate