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

Options

A. `0.07`
B. `0.14`
C. `0.28`
D. `0.35`

Answer

A

Explanation

`Ba(OH)_(2)" " HCl`
`N_(1)V_(1) = N_(2)V_(2) `
`N_(1) = ( 0.1 xx 35)/( 25)`
`Ba(OH)_(2) ` is diacidic base, Molarity `=("Normality")/(2)`
`:. M = ( 0.1 xx7 )/(10 )=0.07 M `