Something about acid reactivity?

Question

Can nitrate salt or chloride salt react with acid?

then can hydroxide salt, oxide salt react with acid?

Answer 1

both nitrate and chloride anions  are the conjugate bases of strong acids and as such have little affinity for a proton ..so if one were to "react " NaCl and nitric acid ..the hydrogen ion would not bind to chloride but would remain ionized typical of a strong acid.

Hydroxide and oxide , however, will react with protons to form water and salts of the acid

      NaOH  + HNO3-------------  NaNO3 + H2O

      CaO  +   2 HCl---------         CaCl2  + H2O