What is the pH of a 0.35 M $NH_4Cl$ solution?

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Answer 1 · 2016-06-11T21:14:48

And what is $pK_a$ for $"ammonium chloride"$ ?

For the reaction:

$NH_4^+ + H_2O(l) rightleftharpoons NH_3(aq) + H_3O^+$

$K_a$ $=$ $([NH_3(aq)][H_3O^+])/([NH_4^+])$

$K_a$ $=$ $x^2/(0.35-x)$ , where $x$ $=$ $[H_3O^+]$ $=$ $[NH_3]$

$pH$ $=$ $-log_10[H_3O^+]$ may be solved exactly, once we have details of $K_a$ . And $K_a$ $=$ $???$

What is the pH of a 0.35 M NH_4ClNH_4Cl solution?