(a) All statements are correct.
(b) (i) only.
(c) (i) and (ii) only.
(d) (iii) only.
(e) None of the statements are correct.
(Correct answer option (a)).
4. Given that Ka (acetic acid) = 1.80 x 10-5 and KW = 1.0 x 10-14 then
the pH of an 0.89 M solution of sodium acetate is : (a) 9.35, (b)
7.0, (c) 5.0, (d) 13.0 and (e) 3.0. (Option (a) is correct).