1 N NaOH Preparation Calculation
Introduction
Sodium hydroxide (NaOH) is a strong base commonly used in various laboratory applications, including titrations, pH adjustments, and chemical synthesis. In this article, we will discuss the preparation of 1 N (normal) NaOH solution and provide a step-by-step calculation for its preparation.
What is 1 N NaOH?
A 1 N (normal) NaOH solution is a solution that contains 1 gram equivalent weight of NaOH per liter of solution. The gram equivalent weight of NaOH is 40 grams per mole, so a 1 N NaOH solution contains 40 grams of NaOH per liter.
Preparation of 1 N NaOH Solution
To prepare a 1 N NaOH solution, you will need the following:
- Sodium hydroxide (NaOH) pellets
- Distilled water
- A measuring cylinder or volumetric flask
Step-by-Step Calculation
- Determine the amount of NaOH needed:
To prepare 1 liter of 1 N NaOH solution, you need to dissolve 40 grams of NaOH in 1 liter of distilled water.
- Weigh the NaOH pellets:
Using an analytical balance, weigh out 40 grams of NaOH pellets.
- Transfer the NaOH to a measuring cylinder or volumetric flask:
Transfer the weighed NaOH pellets to a measuring cylinder or volumetric flask.
- Add distilled water:
Slowly add distilled water to the measuring cylinder or volumetric flask while stirring until the NaOH pellets are completely dissolved. Make sure to rinse the spatula and the sides of the container with a small amount of distilled water to ensure all NaOH is dissolved.
- Make up to the mark:
Add distilled water to the measuring cylinder or volumetric flask until the desired volume (1 liter) is reached.
Final Solution
Your 1 N NaOH solution is now ready to use. It is essential to label the solution with its concentration, date of preparation, and your name.
Precautions
- Wear protective gloves and eyewear when handling NaOH, as it is a strong base and can cause skin and eye irritation.
- Handle the NaOH pellets in a well-ventilated area to avoid inhalation of dust.
- Store the 1 N NaOH solution in a tightly closed container and keep it away from children and pets.
By following these steps and calculations, you can accurately prepare a 1 N NaOH solution for your laboratory needs.
