[sebbe]

I have to calculate the pH of the final solution(?) for a titration of HCL and NH₃.

NH₃ + H₃O <--> NH₄⁺ + H₂O

Concentration:
[NH₃] = 0,01
[HCL] = 0,01

(The answer is pH=5,3 but I have no idea how to get there)

I would appreciate some detailed help of how to solve this exercise if possible, thanks in advance. 

[Astrokel]

NH₃ + H₃O <--> NH₄⁺ + H₂O

Hey, what's (?) ?

Are you trying to write NH3 dissociation equilibrium? Why is there H3O+ ?

This is actually a buffer solution, a weak base + strong acid.

Are you given the Kb value of ammonia? I feel there are missing informations in this question?

[Borek]

Please read forum rules.

NH₄⁺ is weak acid, conjugated with NH₃. What is NH₄⁺ concentration at the endpoint? Do you know how to calculate pH of weak acid solution?

[Astrokel]

NH4+ is a strong conjugate acid? 

[Borek]

Weak.

[sebbe]

We are given a talbe with the K_a values. The pK_a for ammonia is 4,75.

The formula I wrote was just my interpretation of the problem. All the info with get is this:

Calculate the final pH for a titration of HCL 0,01M to ammonia 0,01M. And in the aswers sheet it says that the answer is 5,3.

I Added a (?) after the "final pH" because i don't really know what they mean with final pH. Is it when the amount of NH4 and NH3 is the same?

I don't really know how to calculate the pH in this case, because I don't know which concentrations I have or what to do at all... chemistry is not my thing but I need to learn how to do it.

Thanks

[Borek]

Final - at the end point - means "when the amount of titrant added is identical to the amount of titrated substance". Look at the reaction equation - what do you have in the solution?

[AWK]

I have to calculate the pH of the final solution(?) for a titration of HCL and NH₃.

NH₃ + H₃O <--> NH₄⁺ + H₂O

Concentration:
[NH₃] = 0,01
[HCL] = 0,01

(The answer is pH=5,3 but I have no idea how to get there)

I would appreciate some detailed help of how to solve this exercise if possible, thanks in advance. 

You have a problem of pH calculation for 0.005 M NH4Cl