Preparation of 10% Sodium Hydroxide Solution in 100 Milliliters Volume

Exploring the Applications and Preparation of 10% NaOH Solution (100 mL)

Sodium hydroxide (NaOH), commonly known as lye or caustic soda, is a highly versatile chemical used in various industries, laboratories, and household products. When prepared as a 10% solution, sodium hydroxide can serve numerous applications, ranging from pH adjustment to chemical synthesis and cleaning agents. In this article, we will explore the preparation of a 10% NaOH solution in a 100 mL volume, its uses, and important safety precautions.

To prepare a 10% NaOH solution, you will need pure sodium hydroxide and distilled water. The term “10% NaOH solution” implies that there are 10 grams of sodium hydroxide in 100 mL of the solution. Here is a step-by-step guide to safely preparing this solution

1. Materials Required - Sodium hydroxide (solid) - Distilled water - A balance for measuring - A 100 mL volumetric flask or graduated cylinder - Safety goggles and gloves - A stirring rod or magnetic stirrer

2. Procedure - First, wear appropriate PPE (personal protective equipment), including safety goggles and gloves, as sodium hydroxide is a caustic substance that can cause severe burns upon contact with skin or damage to eyes. - Measure 10 grams of solid sodium hydroxide using the balance. - In a separate container, measure approximately 80 mL of distilled water. It is advisable to add sodium hydroxide to water rather than the other way around, to minimize heat generation and avoid splashing. - Slowly add the measured sodium hydroxide to the distilled water, stirring gently with a stirring rod or magnetic stirrer. The solution will heat up as the NaOH dissolves. - Once the sodium hydroxide has completely dissolved, allow the solution to cool down to room temperature. - Transfer the solution to a 100 mL volumetric flask or graduated cylinder, and add distilled water until the total volume of the solution reaches 100 mL. - Finally, label the container with the concentration and the date of preparation for future reference.

Applications of 10% NaOH Solution

A 10% NaOH solution has a wide range of applications

1. pH Adjustment In laboratories, a 10% NaOH solution is often used to adjust the pH of various chemical reactions. Its strong alkaline nature makes it effective for raising the pH of acidic solutions.

2. Cleaning Agent Sodium hydroxide is a powerful cleaning agent and is widely used in household cleaners. A 10% solution can effectively break down grease, fats, and proteins, making it ideal for use in kitchens and bathrooms.

3. Chemical Synthesis In the chemical industry, NaOH serves as a reagent in various synthesis reactions. It is commonly used in the production of biodiesel, as it acts as a catalyst in the transesterification of fats and oils.

4. Laboratory Use In analytical chemistry, a 10% NaOH solution is utilized for titration and in the preparation of other chemical solutions.

Safety Precautions

Given its corrosive nature, handling sodium hydroxide requires strict adherence to safety protocols

- Always work in a well-ventilated area or under a fume hood. - Use appropriate PPE, including gloves, goggles, and lab coats. - In case of skin contact, immediately rinse the area with copious amounts of water and seek medical attention if irritation persists. - If sodium hydroxide comes into contact with the eyes, rinse thoroughly with water for at least 15 minutes and seek immediate medical help.

Conclusion

The preparation of a 10% NaOH solution in a 100 mL volume is a straightforward process that yields a versatile and powerful chemical solution. Whether used in a laboratory setting, industrial applications, or household cleaning, understanding its properties, applications, and safety measures is essential. By following proper procedures and precautions, you can harness the benefits of sodium hydroxide while minimizing risk and ensuring safe handling.