Preparation of 0.1 M H2SO4 Solution
Introduction
Sulfuric acid (H2SO4) is a strong acid widely used in various laboratory applications, including titration, pH adjustment, and chemical synthesis. In this article, we will discuss the preparation of a 0.1 M H2SO4 solution, which is a common concentration used in many laboratory experiments.
Materials
- Sulfuric acid (H2SO4)
- Distilled water
- Volumetric flask (100 mL)
- Pipette
- Balance
Preparation
Step 1: Calculate the Amount of H2SO4 Needed
To prepare a 0.1 M H2SO4 solution, we need to calculate the amount of H2SO4 required. The molecular weight of H2SO4 is 98.08 g/mol. Therefore, to prepare 100 mL of a 0.1 M solution, we need:
Molarity (M) = 0.1 mol/L
Volume (V) = 100 mL = 0.1 L
Number of moles (n) = Molarity x Volume = 0.1 mol/L x 0.1 L = 0.01 mol
Mass of H2SO4 = Number of moles x Molecular weight = 0.01 mol x 98.08 g/mol = 0.9808 g
Step 2: Weigh the H2SO4
Using a balance, accurately weigh out 0.9808 g of H2SO4.
Step 3: Transfer the H2SO4 to the Volumetric Flask
Using a pipette, carefully transfer the weighed H2SO4 to a 100 mL volumetric flask.
Step 4: Add Distilled Water
Add distilled water to the flask until the volume reaches 100 mL. Mix the solution well to dissolve the H2SO4 completely.
Step 5: Verify the Solution
Verify that the solution is clear and free of any suspended particles. If necessary, filter the solution through a filter paper or a membrane filter to remove any impurities.
Conclusion
A 0.1 M H2SO4 solution has been successfully prepared by accurately weighing out the required amount of H2SO4 and dissolving it in distilled water. This solution can now be used for various laboratory applications, such as titration and pH adjustment.
Safety Precautions
- Wear protective gear, including gloves, goggles, and a lab coat, when handling H2SO4.
- Handle H2SO4 in a well-ventilated area, as it can release toxic fumes.
- Avoid skin contact and inhalation of H2SO4 vapors.
By following these steps and taking necessary safety precautions, you can prepare a high-quality 0.1 M H2SO4 solution for your laboratory experiments.
