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Determine the ph of a 0. 22 m naf solution at 25°c. The ka of hf is 6. 8 × 10-4

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pstnonsonjoku

The pH shows the degree of acidity or alkalinity of the solution. The pH of the solution is 1.92.

What is pH?

The term pH is defined as the hydrogen ion concentration of the solution. We have to set up the ICE table for this reaction as shown below;

             HF +  H2O ⇄  H3O^+  +   F^-

I           0.22                    0              0

C           -x                         +x             +x

E         0.22 - x                 x                x

Ka = [H3O^+] [F^-]/[HF]

6. 8 × 10^-4 = x^2/ 0.22 - x  

6. 8 × 10^-4(0.22 - x) = x^2

x^2 + 6. 8 × 10^-4x - 1.496 × 10^-4 = 0

x=0.012 M

Hence;

[H3O^+] = [F^-] = 0.012 M

pH = -log(0.012 M)

pH = 1.92

Learn more about pH: https://brainly.com/question/15289741

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