Question

$25ml$ of a solution of barium hydroxide on titration with a $0.1$ molar solution of hydrochloric acid gave a titre value of $35ml$. The molarity of barium hydroxide solution was:

• A. $0.14$
• B. $0.28$
• C. $0.35$
• D. $0.07$

Answer 1

Answer: (A)

$0.14$

Since, both have a valency factor of 1, no. of moles should be same for acid and base.

$M_1{V}_1=M_2{V}_2$

$M_1\times 25=0\cdot 1\times 35$

$M_1=\frac{0\cdot 1\times 35}{25}$

$M_1=0\cdot 14M$

So, the correct option is $A$