Preparation of 0.1 N H2SO4 in 1000 mL
Introduction
Sulfuric acid (H2SO4) is a strong acid commonly used in various laboratory applications, including titration, chemical synthesis, and analytical chemistry. In this article, we will outline the steps to prepare 0.1 Normal (N) H2SO4 solution in 1000 mL.
Materials
- Sulfuric acid (H2SO4) (conc. 18 M or 98%)
- Distilled water
- A 1000 mL volumetric flask
- A pipette or measuring cylinder
- A balance or weighing scale (optional)
Preparation
To prepare 0.1 N H2SO4 solution in 1000 mL, follow these steps:
Step 1: Calculate the required amount of H2SO4
The normality (N) of a solution is defined as the number of equivalents of solute per liter of solution. Since we want to prepare 0.1 N H2SO4, we need to calculate the required amount of H2SO4.
Molarity (M) of H2SO4 = Normality (N) x Equivalent weight M = 0.1 N x 49 g/equivalent (eq) M = 4.9 g/L
To prepare 1000 mL of 0.1 N H2SO4, we need: 4.9 g/L x 1 L = 4.9 g of H2SO4
Step 2: Weigh the required amount of H2SO4
Using a balance or weighing scale, accurately weigh 4.9 g of sulfuric acid (H2SO4).
Step 3: Add H2SO4 to the volumetric flask
Carefully add the weighed H2SO4 to the 1000 mL volumetric flask.
Step 4: Add distilled water
Slowly add distilled water to the volumetric flask while stirring the mixture with a glass rod or stirrer. Ensure that the acid is completely dissolved before proceeding.
Step 5: Dilute to the mark
Continue adding distilled water to the volumetric flask until the solution reaches the 1000 mL mark.
Step 6: Mix well
Mix the solution well by swirling the flask gently.
Final Preparation
The 0.1 N H2SO4 solution is now ready for use. It is essential to store the solution in a cool, dark place and label it appropriately.
Caution
When handling sulfuric acid, wear protective gloves, goggles, and a lab coat to prevent skin contact and eye irritation. Always handle the acid in a well-ventilated area and avoid inhaling the fumes.
By following these steps, you can accurately prepare 0.1 N H2SO4 solution in 1000 mL for your laboratory applications.
