Q. 25 mL of a solution of barium hydroxide on titration with 0.1 molar solution of hydrochloric acid gave a titre value of 35 mL. The molarity of barium hydroxide solution was
A) 0.07
B) 0.14
C) 0.28
D) 0.35
Explanation
(a)
Let molarity o$\ Ba(OH)_{2}\ = \ M_{1}$
$\therefore\ \ \ \ \ \$Normality = 2$M_{1}\$
Molarity of HCl = 0.1 M = 0.1 N
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ N_{1}V_{1} = \ N_{2}V_{2}$
$\ \ \ \ \ \ \ \ \ 2\ M_{1}\ \times \ 25\ = \ 0.1\ \times \ 35$
$M_{1}$ =0.07 M
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.