Which Statement Best Describes the Process of Making a Solution by Diluting a Stock Solution?
The process of making a solution by diluting a stock solution involves reducing the concentration of the original solution by adding a solvent, typically water. This is done to achieve the desired concentration for a specific application or experiment. Diluting a stock solution is a common practice in various fields, including chemistry, biology, and medicine.
When making a solution by dilution, it is important to understand the concept of molarity, which is the concentration of a solute in a solution expressed as moles of solute per liter of solution. The molarity of a stock solution is known, and by diluting it, we can calculate the new concentration based on the volume of the stock solution and the volume of the solvent added.
The process of dilution can be summarized in the following statement: To make a solution by diluting a stock solution, a known volume of the stock solution is mixed with a known volume of the solvent to achieve the desired concentration.
FAQs about Diluting Stock Solutions:
1. Why is it necessary to dilute stock solutions?
Stock solutions are often highly concentrated, and diluting them allows for more accurate and precise measurements. It also ensures that the final solution has the desired concentration for a specific application.
2. How do I calculate the new concentration after dilution?
The new concentration can be calculated using the formula: C1V1 = C2V2, where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.
3. Can any solvent be used for dilution?
The choice of solvent depends on the solubility of the solute and the desired properties of the final solution. Water is commonly used as a solvent due to its universal availability and compatibility with many substances.
4. Can I dilute a solution multiple times?
Yes, you can dilute a solution multiple times by repeating the dilution process. Each dilution will further reduce the concentration of the solute.
5. What equipment do I need for dilution?
You will need a graduated cylinder or pipette to measure the volumes accurately, a beaker or flask to mix the solution, and a stirrer for thorough mixing.
6. Are there any safety precautions to consider when diluting solutions?
It is important to wear appropriate protective equipment, such as gloves and goggles, when handling concentrated solutions. Additionally, ensure proper ventilation, especially when dealing with volatile substances.
7. Can I reverse the dilution process if I need a higher concentration?
Yes, if you need a higher concentration, you can evaporate the solvent from the diluted solution, resulting in a higher concentration of the solute. However, this may not always be feasible, depending on the nature of the solute and the solvent used.
In conclusion, diluting a stock solution is a common process used to achieve the desired concentration for various applications. Understanding the concept of molarity and following proper measurement techniques are crucial for successful dilution.