Salts and acids/ bases conceptual question

  • Thread starter gkangelexa
  • Start date
  • #1
81
1
My book says the following:

NH4NO3 is weakly acidic as a salt because it is composed of the conjugates of the base NH3 and the strong acid HNO3.


Why does that make it weakly acidic exactly??

Is it because the HNO3 is a strong acid, therefore it won't steal the protons that are released from the NH4 in solution?
 

Answers and Replies

  • #2
4
0
You pretty much got it.

Nitric acid HNO3 is a strong acid, so it's conjugate base, NO3- is a very weak base. It will not affect the pH of the solution.

Ammonia NH3, on the other hand, is a moderately weak base, so it's conjugate acid NH4+ is a moderately strong acid. It will release protons in solution.

So, as you say, the NH4+ releases protons, the NO3- does not pick up protons, so the net effect is an acidic solution.
 

Related Threads on Salts and acids/ bases conceptual question

Replies
2
Views
2K
  • Poll
  • Last Post
Replies
7
Views
855
  • Last Post
Replies
11
Views
3K
Replies
15
Views
6K
  • Last Post
Replies
3
Views
17K
Replies
1
Views
2K
  • Last Post
Replies
2
Views
858
  • Last Post
Replies
1
Views
8K
  • Last Post
Replies
9
Views
1K
Top