50 ~mL of H ₂ O is added to 50 ~mL of 1 10⁻³ M barium hydroxide solution. What is the pH of the resulting solution?

Step-by-step solution

In water, barium hydroxide is hydrolysed as follows. aligned Ba ( OH )₂ & Ba ²⁺+2 OH ⁻ conc. of Ba ²⁺ & =1 10⁻³ M conc. of [ OH ⁻ ] & =2 1 10⁻³ M & =2 10⁻³ M pOH & =- [ OH ⁻ ] & =- (2 10⁻³ ) & =2.69 aligned aligned pH + pOH & =14 pH & =14- pOH & =14-2.69 & =11.3 & 11.0 aligned