`25 mL` of a solution of barium hydroxide on titration with `0.1 "molar"` solution of hydrochloric acid give a titre value of `35 mL`. The molarity of barium hydroxide is:

Options

A. (a)0.28
B. (b)0.35
C. (c )0.07
D. (d)0.14

Answer

C

Explanation

Meq. Of `Ba(OH)_(2)=Meq`. Of `HCl`
`Nxx25=0.1xx35`
`:. N_(Ba(OH)_(2))=3.5/25`
`:. M_(Ba(OH)_(2))=3.5/25xx1/2=0.07`