Homework Help is Here – Start Your Trial Now!
Science
Chemistry
What is the hydroxide ion concentration of a solution prepared by dissolving 0.709 g of Mg(OH) 2 in 449 mL of water?

What is the hydroxide ion concentration of a solution prepared by dissolving 0.709 g of Mg(OH) 2 in 449 mL of water?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
See similar textbooks
icon
Related questions
Question
**Problem Statement:** Calculate the concentration of hydroxide ions in a solution formed by dissolving 0.709 grams of Mg(OH)₂ in 449 mL of water. Use appropriate chemical principles to determine the concentration. **Solution Explanation:** To find the hydroxide ion concentration, follow these steps: 1. **Determine Moles of Mg(OH)₂:** - Calculate the molar mass of magnesium hydroxide (Mg(OH)₂). - Use the formula: Molar mass of Mg(OH)₂ = 24.31 (Mg) + 2 × (16.00 + 1.01) (OH) = 58.32 g/mol. 2. **Convert Grams to Moles:** - Moles of Mg(OH)₂ = 0.709 g / 58.32 g/mol. 3. **Determine Hydroxide Ion Concentration:** - Since Mg(OH)₂ dissociates into Mg²⁺ and 2 OH⁻ ions, the moles of OH⁻ ions = 2 × moles of Mg(OH)₂. - Convert the volume of water to liters: 449 mL = 0.449 L. - Calculate the concentration of OH⁻ ions using the formula: Concentration (M) = moles of OH⁻ / 0.449 L. Each step involves fundamental concepts of stoichiometry, molarity, and chemical reactions to achieve the final hydroxide ion concentration.
Transcribed Image Text:**Problem Statement:** Calculate the concentration of hydroxide ions in a solution formed by dissolving 0.709 grams of Mg(OH)₂ in 449 mL of water. Use appropriate chemical principles to determine the concentration. **Solution Explanation:** To find the hydroxide ion concentration, follow these steps: 1. **Determine Moles of Mg(OH)₂:** - Calculate the molar mass of magnesium hydroxide (Mg(OH)₂). - Use the formula: Molar mass of Mg(OH)₂ = 24.31 (Mg) + 2 × (16.00 + 1.01) (OH) = 58.32 g/mol. 2. **Convert Grams to Moles:** - Moles of Mg(OH)₂ = 0.709 g / 58.32 g/mol. 3. **Determine Hydroxide Ion Concentration:** - Since Mg(OH)₂ dissociates into Mg²⁺ and 2 OH⁻ ions, the moles of OH⁻ ions = 2 × moles of Mg(OH)₂. - Convert the volume of water to liters: 449 mL = 0.449 L. - Calculate the concentration of OH⁻ ions using the formula: Concentration (M) = moles of OH⁻ / 0.449 L. Each step involves fundamental concepts of stoichiometry, molarity, and chemical reactions to achieve the final hydroxide ion concentration.
Expert Solution
Step 1

Given,

mass of Mg(OH)2=0.709 gVolume of water = 449 mL

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Solutions
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
SEE MORE TEXTBOOKS