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...
Related questions
Question

Transcribed Image Text:**Question:**
An 8.0% NaCl solution has a density of 1.05 g/mL. What is the molar concentration (M) of the solution?
**Solution:**
1. **Calculate the mass of NaCl in 1 liter of solution:**
- Since the density is 1.05 g/mL, 1 liter (1000 mL) of solution weighs 1050 g.
- 8.0% NaCl by mass means there are 8.0 g of NaCl per 100 g of solution.
- Therefore, in 1050 g of solution, the mass of NaCl = (8.0 g/100 g) × 1050 g = 84 g of NaCl.
2. **Calculate the moles of NaCl:**
- Molar mass of NaCl: 58.44 g/mol.
- Moles of NaCl = mass/molar mass = 84 g / 58.44 g/mol = 1.438 mol.
3. **Calculate the molarity (M):**
- Molarity (M) = moles of solute/liters of solution.
- Molarity of the solution = 1.438 mol / 1 L = 1.438 M.
Thus, the molar concentration of the solution is approximately 1.44 M NaCl.
Expert Solution

Step 1
Density, mass and volume are related as
Density(d) = mass/volume.
Volume = mass/density.
Given,
8% NaCl means that the solution contains 8 g of NaCl in 92 g of water.
i.e. weight of NaCl = 8 g.
weight of water = 92 g.
The total mass of the solution = 100 g.
Density of the solution = 1.05 g/mL.
Trending now
This is a popular solution!
Step by step
Solved in 4 steps

Knowledge Booster
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
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning

Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education

Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning

Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning

Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education

Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning

Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education

Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning

Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY