LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
28 views
in Chemistry by (73.3k points)
closed by
The degree of ionization of a 0.1M bromoacetic acid solution is 0.132. Calculate the pH of the solution and the `pK_(a)` of bromoacetic acid.

1 Answer

0 votes
by (73.6k points)
selected by
 
Best answer
Correct Answer - `pH = 1.88, pK_(a) = 2.70`
Degree of ionization, `alpha` = 0.132
Concentration, `c = 0.1 M`
Thus, the concentration of `H_(3)O+ = c.alpha`
`= 0.1 xx 0.132`
`= 0.0132`
`pH = -"log"[H^(+)] `
`= -log (0.0132)`
`= 1.879 : 1.88`
Now,
`K_(a) = Calpha^(2)`
`= 0.1 xx (0.132)^(2)`
`K_(a) = .0017`
`pK_(a) = 2.75`

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...