1 W/V Solution Preparation
Introduction
A 1 W/V solution, also known as a 1% weight per volume solution, is a type of solution where one gram of solute is dissolved in 100 milliliters of solvent. This solution is commonly used in various fields such as chemistry, pharmaceuticals, and biology. In this article, we will discuss the preparation of a 1 W/V solution.
Materials Needed
- Solute: The substance to be dissolved, e.g., sodium chloride (NaCl), potassium nitrate (KNO3), etc.
- Solvent: The substance in which the solute will be dissolved, e.g., water, ethanol, etc.
- Balance: A digital balance or analytical balance to accurately measure the weight of the solute.
- Volumetric flask: A 100 mL volumetric flask to prepare the solution.
- Stirring rod: A glass or plastic rod to mix the solution.
Preparation of 1 W/V Solution
Step 1: Weigh the Solute
Using a balance, accurately weigh 1 gram of the solute. For example, if you are preparing a 1 W/V solution of sodium chloride, weigh 1 gram of NaCl.
Step 2: Add the Solvent
Add a small amount of solvent to the volumetric flask. This will help to dissolve the solute.
Step 3: Add the Solute
Add the weighed solute to the volumetric flask.
Step 4: Mix the Solution
Using a stirring rod, mix the solution until the solute is completely dissolved.
Step 5: Dilute to Volume
Add more solvent to the volumetric flask until the 100 mL mark is reached.
Step 6: Mix Again
Mix the solution again to ensure that the solute is evenly distributed throughout the solvent.
Example Calculation
Suppose we want to prepare a 1 W/V solution of sodium chloride (NaCl). To do this, we need to weigh 1 gram of NaCl and dissolve it in 100 mL of water.
- Weight of NaCl: 1 g
- Volume of water: 100 mL
After mixing the solution, we get a 1 W/V solution of NaCl.
Conclusion
In conclusion, preparing a 1 W/V solution is a simple process that requires accurate weighing and measurement of the solute and solvent. By following the steps outlined above, you can easily prepare a 1 W/V solution of any solute in any solvent.
