(Solved): What is the \( \mathrm{OH}^{-} \)concentration? [Hint: Use the \( K_{\text {w }} \) relationship.] ...

What is the \( \mathrm{OH}^{-} \)concentration? [Hint: Use the \( K_{\text {w }} \) relationship.] Express your answer with the appropriate units. Suppose \( 1.34 \mathrm{~mol} \) of \( \mathrm{HCl} \) is dissolved in enough water to give \( 625.0 \mathrm{~mL} \) of solution. What is the \( \mathrm{H}_{3} \mathrm{O}^{+} \)concentration? [Hint: When 1 mole of \( \mathrm{HCl} \) dissociates, we get 1 mole of \( \mathrm{H}_{3} \mathrm{O}^{+} \)ions because the acid is strong and monoprotic. Your answer should be in moles of \( \mathrm{H}_{3} \mathrm{O}^{+} \)per liter of solution.] Express your answer with the appropriate units.