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Ch.16 - Acids and Bases
All textbooksTro 4th EditionCh.16 - Acids and BasesProblem 82c
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Chapter 16, Problem 82c

For each strong base solution, determine [OH–], [H3O+], pH, and pOH. c. 1.9×10–4 M KOH

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Strong Bases

Strong bases, such as potassium hydroxide (KOH), completely dissociate in water to produce hydroxide ions (OH-). This means that the concentration of the base in solution is equal to the concentration of OH- ions produced. Understanding this dissociation is crucial for calculating the concentrations of hydroxide and hydronium ions in the solution.
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pH and pOH Calculations

pH and pOH are logarithmic scales used to measure the acidity and basicity of a solution, respectively. The pH is calculated using the formula pH = -log[H3O+], while pOH is calculated as pOH = -log[OH-]. The relationship between pH and pOH is given by the equation pH + pOH = 14 at 25°C, which is essential for converting between these two measures.
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Ion Product of Water

The ion product of water (Kw) is a fundamental concept in acid-base chemistry, defined as Kw = [H3O+][OH-] = 1.0 x 10^-14 at 25°C. This relationship allows us to find the concentration of hydronium ions when the concentration of hydroxide ions is known, and vice versa. It is critical for determining the pH and pOH of a solution when dealing with strong bases.
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Related Practice
Textbook Question

For each strong base solution, determine [OH–], [H3O+], pH, and pOH. a. 0.15 M NaOH b. 1.5×10–3 M Ca(OH)2 c. 4.8×10–4 M Sr(OH)2 d. 8.7×10–5 M KOH

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Textbook Question

For each strong base solution, determine [OH–], [H3O+], pH, and pOH. a. 8.77×10–3 M LiOH

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Textbook Question

For each strong base solution, determine [OH–], [H3O+], pH, and pOH. b. 0.0112 M Ba(OH)2

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Textbook Question

For each strong base solution, determine [OH–], [H3O+], pH, and pOH. d. 5.0×10–4 M Ca(OH)2

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Textbook Question

Determine the pH of a solution that is 3.85% KOH by mass. Assume that the solution has density of 1.01 g/mL.

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Open Question
Determine the pH of a solution that is 1.55% NaOH by mass. Assume that the solution has a density of 1.01 g/mL.