JEE Main Chemistry question

Chemistry Equilibrium JEE Main

Which of the following solutions will have pH=9 at 298 K? [BCECE 2008]

(A) M HCl solution
(B) M NaOH solutionCorrect
(C) M KOH solution
(D)Both (a) and (b)

Answer: (B)

Solution

M gives , .

Question ID VK-135597