Answer:
[tex]NH_{4}NO_{3}[/tex] has pH<7
Explanation:
pH of salt depends on species generated through hydrolysis of the given salt.
Hydrolysis equilibrium of [tex]NH_{4}NO_{3}[/tex] is given below:
[tex]NH_{4}NO_{3}+H_{2}O\rightarrow NH_{4}OH+HNO_{3}[/tex]
[tex]NH_{4}OH[/tex] is a weak base and [tex]HNO_{3}[/tex] is a strong acid. So species obtained through hydrolysis of [tex]NH_{4}NO_{3}[/tex] is a mixture of strong acid and weak base.
Hence the the salt solution will be acidic in nature. That means pH of solution is less than 7.
