What Is The Concentration Of A Solution That Has 87.6645 G Of NaCl To Make A 2.5 L Solution?
Introduction
In chemistry, the concentration of a solution is a measure of the amount of solute present in a given volume of the solution. It is an essential concept in various fields, including chemistry, biology, and engineering. The concentration of a solution can be expressed in different units, such as molarity (M), molality (m), and mass percentage (%). In this article, we will focus on calculating the concentration of a solution that has 87.6645 g of NaCl to make a 2.5 L solution.
What is Molarity?
Molarity (M) is a measure of the concentration of a solution, expressed as the number of moles of solute per liter of solution. It is defined as:
M = moles of solute / liters of solution
Molarity is a widely used unit of concentration in chemistry and is often used to express the concentration of solutions in laboratory settings.
What is the Molar Mass of NaCl?
To calculate the concentration of the solution, we need to know the molar mass of NaCl. The molar mass of NaCl is the sum of the atomic masses of sodium (Na) and chlorine (Cl). The atomic mass of Na is 22.9898 g/mol, and the atomic mass of Cl is 35.453 g/mol. Therefore, the molar mass of NaCl is:
Molar mass of NaCl = 22.9898 g/mol + 35.453 g/mol = 58.443 g/mol
Calculating the Number of Moles of NaCl
To calculate the number of moles of NaCl, we can use the formula:
moles of solute = mass of solute / molar mass of solute
Substituting the values, we get:
moles of NaCl = 87.6645 g / 58.443 g/mol = 1.5 mol
Calculating the Concentration of the Solution
Now that we have the number of moles of NaCl, we can calculate the concentration of the solution using the formula:
M = moles of solute / liters of solution
Substituting the values, we get:
M = 1.5 mol / 2.5 L = 0.6 M
Calculating the Mass Percentage of NaCl
In addition to molarity, we can also express the concentration of the solution as a mass percentage. The mass percentage of NaCl is defined as:
mass percentage = (mass of solute / mass of solution) x 100%
To calculate the mass percentage, we need to know the mass of the solution. The mass of the solution is the sum of the mass of NaCl and the mass of the solvent (water). Since we are not given the mass of the solvent, we will assume that the mass of the solution is equal to the mass of the solvent, which is 2.5 L x 1 g/mL = 2500 g.
Substituting the values, we get:
mass percentage = (87.6645 g / 2500 g) x 100% = 3.5%
Conclusion
In conclusion, the concentration of a solution that has 87.6645 g of NaCl to make a 2.5 L solution is 0.6 M. This can also be expressed as a mass percentage of 3.5%. The molar mass of NaCl is 58.443 g/mol, and the number of moles of NaCl is 1.5 mol. The concentration of the solution is an essential concept in chemistry, and it is widely used in various fields.
Frequently Asked Questions
Q: What is the molar mass of NaCl?
A: The molar mass of NaCl is 58.443 g/mol.
Q: What is the number of moles of NaCl?
A: The number of moles of NaCl is 1.5 mol.
Q: What is the concentration of the solution?
A: The concentration of the solution is 0.6 M.
Q: What is the mass percentage of NaCl?
A: The mass percentage of NaCl is 3.5%.
References
- CRC Handbook of Chemistry and Physics, 97th Edition
- IUPAC Green Book, 3rd Edition
- Chemistry: An Atoms First Approach, 2nd Edition by Steven S. Zumdahl
Further Reading
- Concentration of Solutions: A Comprehensive Guide
- Molarity: A Measure of Concentration
- Mass Percentage: A Measure of Concentration
Related Articles
- What is the Concentration of a Solution that has 50.0 g of NaCl to Make a 1.0 L Solution?
- What is the Concentration of a Solution that has 100.0 g of NaCl to Make a 2.0 L Solution?
- What is the Concentration of a Solution that has 200.0 g of NaCl to Make a 4.0 L Solution?
Introduction
In our previous article, we discussed the concentration of a solution that has 87.6645 g of NaCl to make a 2.5 L solution. In this article, we will answer some frequently asked questions related to the concentration of solutions.
Q&A
Q: What is the difference between molarity and mass percentage?
A: Molarity is a measure of the concentration of a solution, expressed as the number of moles of solute per liter of solution. Mass percentage, on the other hand, is a measure of the concentration of a solution, expressed as the mass of solute per mass of solution.
Q: How do I calculate the concentration of a solution?
A: To calculate the concentration of a solution, you need to know the number of moles of solute and the volume of the solution. You can use the formula:
M = moles of solute / liters of solution
or
mass percentage = (mass of solute / mass of solution) x 100%
Q: What is the molar mass of NaCl?
A: The molar mass of NaCl is 58.443 g/mol.
Q: What is the number of moles of NaCl?
A: The number of moles of NaCl is 1.5 mol.
Q: What is the concentration of the solution?
A: The concentration of the solution is 0.6 M.
Q: What is the mass percentage of NaCl?
A: The mass percentage of NaCl is 3.5%.
Q: How do I convert molarity to mass percentage?
A: To convert molarity to mass percentage, you need to know the molar mass of the solute. You can use the formula:
mass percentage = (M x molar mass of solute) / (1 + (M x molar mass of solute))
Q: How do I convert mass percentage to molarity?
A: To convert mass percentage to molarity, you need to know the molar mass of the solute. You can use the formula:
M = (mass percentage / 100) / (molar mass of solute / (1 + (mass percentage / 100)))
Q: What is the difference between a concentrated solution and a dilute solution?
A: A concentrated solution is a solution that has a high concentration of solute, while a dilute solution is a solution that has a low concentration of solute.
Q: How do I dilute a concentrated solution?
A: To dilute a concentrated solution, you need to add a solvent to the solution until the desired concentration is reached.
Q: What is the importance of concentration in chemistry?
A: Concentration is an essential concept in chemistry, as it determines the properties and behavior of a solution. It is widely used in various fields, including chemistry, biology, and engineering.
Conclusion
In conclusion, the concentration of a solution is a measure of the amount of solute present in a given volume of the solution. It is an essential concept in chemistry, and it is widely used in various fields. We hope that this article has answered some of your frequently asked questions related to the concentration of solutions.
Frequently Asked Questions: Concentration of Solutions
Q: What is the difference between molarity and molality?
A: Molarity is a measure of the concentration of a solution, expressed as the number of moles of solute per liter of solution. Molality, on the other hand, is a measure of the concentration of a solution, expressed as the number of moles of solute per kilogram of solvent.
Q: How do I calculate the concentration of a solution in terms of molality?
A: To calculate the concentration of a solution in terms of molality, you need to know the number of moles of solute and the mass of the solvent. You can use the formula:
m = moles of solute / mass of solvent (in kg)
Q: What is the difference between a saturated solution and an unsaturated solution?
A: A saturated solution is a solution that has reached its maximum concentration of solute, while an unsaturated solution is a solution that has not reached its maximum concentration of solute.
Q: How do I determine if a solution is saturated or unsaturated?
A: To determine if a solution is saturated or unsaturated, you need to observe the behavior of the solution. If the solution is saturated, it will not dissolve any more solute. If the solution is unsaturated, it will dissolve more solute.
References
- CRC Handbook of Chemistry and Physics, 97th Edition
- IUPAC Green Book, 3rd Edition
- Chemistry: An Atoms First Approach, 2nd Edition by Steven S. Zumdahl
Further Reading
- Concentration of Solutions: A Comprehensive Guide
- Molarity: A Measure of Concentration
- Mass Percentage: A Measure of Concentration
Related Articles
- What is the Concentration of a Solution that has 50.0 g of NaCl to Make a 1.0 L Solution?
- What is the Concentration of a Solution that has 100.0 g of NaCl to Make a 2.0 L Solution?
- What is the Concentration of a Solution that has 200.0 g of NaCl to Make a 4.0 L Solution?