50 mL of H_2O is added to 50 mL of 1 times | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) Barium hydroxide is a strong base and dissociates completely as: $Ba(OH)_2 ightarrow Ba^{2+} + 2OH^-$. Initial concentration of $Ba(OH)_2 = 1

Vedclass · Accepted Answer

$11.0$

Vedclass · Answer

(C) Barium hydroxide is a strong base and dissociates completely as: $Ba(OH)_2 ightarrow Ba^{2+} + 2OH^-$. Initial concentration of $Ba(OH)_2 = 1 	imes 10^{-3} \ M$. Initial concentration of $OH^- = 2 	imes 1 	imes 10^{-3} = 2 	imes 10^{-3} \ M$. Upon adding $50 \ mL$ of $H_2O$ to $50 \ mL$ of the solution, the total volume becomes $100 \ mL$. The new concentration of $OH^-$ is calculated using the dilution formula $M_1V_1 = M_2V_2$: $(2 	imes 10^{-3} \ M) 	imes (50 \ mL) = M_2 	imes (100 \ mL)$. $M_2 = \frac{2 	imes 10^{-3} 	imes 50}{100} = 1 	imes 10^{-3} \ M$. $pOH = -\log[OH^-] = -\log(1 	imes 10^{-3}) = 3$. $pH = 14 - pOH = 14 - 3 = 11.0$.

$50 \ mL$ of $H_2O$ is added to $50 \ mL$ of $1 \times 10^{-3} \ M$ barium hydroxide solution. What is the $pH$ of the resulting solution?

Similar Questions

What is the $pH$ of a $1 \ mM$ solution of $NaOH$?

The $pH$ value of which one of the following is not equal to $1$?

Which of the following solutions has the highest $pH$?

$25 \ mL$ of $0.1 \ M$ $HCl$ solution is diluted till $500 \ mL$. Calculate the $pH$ of the dilute solution. (in $.3$)

The $pH$ of $10^{-7} \, M \, HCl$ is ......

Vedclass Test Series

Exam Paper Generator

Online Exam Module