SELECT * FROM question_mgmt as q WHERE id=3247 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=9 AND chapterId=48 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 11th chemistry Equilibrium the degree of ionization of a 0 1m bromoacetic aci

Question:

The degree of ionization of a 0.1M bromoacetic acid solution is 0.132. Calculate the pH of the solution and the pKa of bromoacetic acid.

Answer:

Degree of ionization, α = 0.132

Concentration, c = 0.1 M

Thus, the concentration of H3O+ = c.α

= 0.1 × 0.132

= 0.0132

pH = -log [H+]

      = -log (0.0132)

     = 1.879 : 1.88

Now,

Ka  =  Cα2

      =  0.1 x (0.132)2

 Ka = 0.0017

pKα  = 2.75


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