Question

Determine the hydrogen ion or hydroxide ion concentration in each of the following solutions, as appropriate. (a) a solution in which $\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]=9.02 \times 10^{-10} M$ (b) a solution in which $\left[\mathrm{OH}^{-}\right]=1.06 \times 10^{-11} M$

Name: Problem 34, Chapter 15: Chemistry Principles and Practice
Uploaded: 2022-02-14T20:45:30-08:00
Duration: 1 min 40 s
Channel: Adriano Chikande
Description: Determine the hydrogen ion or hydroxide ion concentration in each of the following solutions, as appropriate. (a) a solution in which [H3 O^+]=9.02 ×10^-10 M (b) a solution in which [OH^-]=1.06 ×10^-11 M

   Determine the hydrogen ion or hydroxide ion concentration in each of the following solutions, as appropriate.
(a) a solution in which $\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]=9.02 \times 10^{-10} M$
(b) a solution in which $\left[\mathrm{OH}^{-}\right]=1.06 \times 10^{-11} M$

Chemistry Principles and Practice

Daniel L. Reger,… 3rd Edition

Chapter 15, Problem 34

Instant Answer

Solved by Expert Adriano Chikande

02/14/2022

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The $K_w$ is $10^{-14}$. Show more…

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Determine the hydrogen ion or hydroxide ion concentration in each of the following solutions, as appropriate. (a) a solution in which $\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]=9.02 \times 10^{-10} M$ (b) a solution in which $\left[\mathrm{OH}^{-}\right]=1.06 \times 10^{-11} M$

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Key Concepts

Ionic Product of Water (Kw)

This constant, defined as the product of the hydrogen ion concentration and the hydroxide ion concentration in water at equilibrium, is a fundamental concept in acid-base chemistry. At 25°C, Kw is typically 1.0 × 10?¹?, meaning that regardless of the solution, the product [H?O?] × [OH?] must equal this value. This allows one to calculate either the hydrogen ion concentration or the hydroxide ion concentration when the other is known.

pH and pOH Relationship

pH and pOH are logarithmic scales used to express the acidity and basicity of a solution, respectively. They are connected by the relationship pH + pOH = 14 (at 25°C), which directly links the concentrations of hydrogen ions and hydroxide ions. This relationship is essential for converting between [H?O?] and [OH?] and for understanding the overall acid-base balance in aqueous solutions.

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