0.1 M Sodium Hydroxide Solution Preparation
Introduction
Sodium hydroxide (NaOH) is a strong base commonly used in various laboratory applications, including titration, pH adjustment, and chemical synthesis. A 0.1 M sodium hydroxide solution is a commonly used concentration in many laboratory procedures. In this article, we will outline the preparation of a 0.1 M sodium hydroxide solution.
Materials
- Sodium hydroxide (NaOH) pellets
- Distilled water
- A balance or scale
- A 100 mL or 1000 mL volumetric flask
- A stir rod or magnetic stirrer
Preparation
Step 1: Calculate the Amount of NaOH Needed
To prepare a 0.1 M sodium hydroxide solution, you need to calculate the amount of NaOH required. The molar mass of NaOH is 40.0 g/mol. For a 0.1 M solution, you need to dissolve 4.0 g of NaOH in 1 liter of water.
Step 2: Weigh the NaOH
Using a balance or scale, weigh out 4.0 g of NaOH pellets.
Step 3: Dissolve the NaOH
Place the weighed NaOH pellets in a 100 mL or 1000 mL volumetric flask. Add a small amount of distilled water to the flask to dissolve the NaOH. Use a stir rod or magnetic stirrer to facilitate dissolution.
Step 4: Add Distilled Water
Once the NaOH has dissolved, add distilled water to the flask until the volume reaches 1 liter (1000 mL). Mix well to ensure the solution is homogeneous.
Step 5: Verify the Concentration
Use a pH meter or titration technique to verify that the solution has a concentration of 0.1 M sodium hydroxide.
Precautions
- Handle sodium hydroxide with care, as it is a strong base that can cause skin and eye irritation.
- Wear protective gloves, goggles, and lab coats when handling NaOH.
- Work in a well-ventilated area to avoid inhaling NaOH fumes.
Conclusion
A 0.1 M sodium hydroxide solution is a commonly used concentration in laboratory applications. By following the steps outlined in this article, you can prepare a accurate and precise solution of sodium hydroxide. Always handle sodium hydroxide with care and follow proper laboratory safety protocols.
