Amongst the given list of acids and bases, following are the strong acids and weak acids
Strong Acid: HBr, [tex]HNO_{3}[/tex] and [tex]H_{2}SO_{4}[/tex]
Weak Acid: [tex]CH_{3}COOH[/tex] and HCOOH
And strong bases with weak bases are given below;
Strong Base: NaOH, KOH and [tex]Ca(OH)_{2}[/tex]
Weak Base: [tex]NH_{4}OH[/tex] and [tex]NH_{3} [/tex]
Now, Acid + Base → Salt + Water
so, the salt of strong acid and weak base which will have pH < 7
will be [tex]NH_{4}NO_{3}[/tex]
because of the following acid base reaction (neutralization reaction)
[tex] HNO_{3}[/tex] + [tex]NH_{4}OH[/tex] ↔ [tex]NH_{4}NO_{3}[/tex] + [tex]H_{2}O[/tex]
