Question

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`

Answer 1

Correct Answer - A
`Ba(OH)_(2) + 2HCl to BaCl_(2)+H_(2)O`
`(M_(1)V_(1))/(n_(1))=(M_(2)V_(2))/(n_(2))`
`Ba(OH)_(2)" "HCl`
`(M_(1)xx25)/(1)=(0.1xx35)/(2)`
`M_(1) = (35)/(10xx2xx25)=0.07 M`