Preparation of 0.1N H2SO4 Solution for 1000ml
Introduction
Sulfuric acid (H2SO4) is a strong acid widely used in various industries, including chemical manufacturing, petroleum refining, and wastewater treatment. In laboratory settings, H2SO4 is commonly used as a reagent for various chemical reactions and analytical procedures. In this article, we will discuss the preparation of 0.1 Normal (N) H2SO4 solution for 1000ml.
What is Normality (N)?
Normality (N) is a measure of the concentration of a solution, defined as the number of gram equivalents of a solute per liter of solution. In the case of H2SO4, the molecular weight is 98.08 g/mol, and the equivalent weight is 49.04 g/mol (since H2SO4 is a dibasic acid). Therefore, a 0.1N H2SO4 solution contains 4.904 g of H2SO4 per liter.
Materials Needed
- Concentrated sulfuric acid (H2SO4, 95%-98%)
- Distilled water
- Glassware (beaker, flask, pipette, etc.)
- Volumetric flask (1000ml)
Preparation of 0.1N H2SO4 Solution
To prepare 0.1N H2SO4 solution for 1000ml, follow these steps:
Step 1: Calculate the Volume of Concentrated H2SO4 Needed
Using the formula:
Volume of H2SO4 (ml) = Equivalent weight (g) x Normality (N) x Volume of solution (L)
Volume of H2SO4 (ml) = 4.904 g x 0.1 N x 1 L Volume of H2SO4 (ml) = 4.904 ml
Since concentrated H2SO4 is typically 95%-98%, we need to adjust the volume accordingly:
Volume of 95% H2SO4 (ml) = 4.904 ml x (100%/95%) Volume of 95% H2SO4 (ml) = 5.16 ml (approximately)
Step 2: Pipette the Calculated Volume of H2SO4
Using a pipette, accurately measure and transfer 5.16 ml of concentrated H2SO4 into a 1000ml volumetric flask.
Step 3: Add Distilled Water
Slowly add distilled water to the volumetric flask while swirling the flask to mix the contents. Continue adding water until the volume reaches 1000ml.
Step 4: Mix and Label the Solution
Mix the solution thoroughly by swirling the flask several times. Label the flask as "0.1N H2SO4 solution" and record the date of preparation.
Safety Precautions
When handling H2SO4, always wear protective gear, including:
- Gloves
- Lab coat
- Safety goggles
- Face shield
H2SO4 is a corrosive and hazardous substance. Handle it with care to avoid skin contact, inhalation of fumes, and spills.
Conclusion
In this article, we have successfully prepared 0.1N H2SO4 solution for 1000ml. This solution can be used in various laboratory applications, including titrations, chemical reactions, and analytical procedures. Always follow proper safety protocols when handling H2SO4 and other chemicals.
