0.1 H2SO4 Preparation
Introduction
Sulfuric acid (H2SO4) is a strong acid widely used in various industries such as chemical manufacturing, petroleum refining, and pharmaceuticals. In laboratory settings, H2SO4 is often used as a catalyst, dehydrating agent, and oxidizing agent. In this article, we will discuss the preparation of 0.1 M H2SO4 solution, which is a common concentration used in many laboratory applications.
Materials
- Sulfuric acid (H2SO4) - concentrated (98%)
- Distilled water
- Volumetric flask (100 mL)
- Pipettes (1 mL and 10 mL)
- Balance
- Gloves and goggles (for safety)
Preparation of 0.1 M H2SO4 Solution
step 1: Calculate the Volume of Concentrated H2SO4 Needed
To prepare 100 mL of 0.1 M H2SO4 solution, we need to calculate the volume of concentrated H2SO4 required. The molarity of concentrated H2SO4 is approximately 18 M.
Molarity of desired H2SO4 solution = 0.1 M Volume of solution required = 100 mL = 0.1 L Molarity of concentrated H2SO4 = 18 M
Using the formula:
Volume of concentrated H2SO4 = (Molarity of desired solution x Volume of solution required) / Molarity of concentrated H2SO4
Volume of concentrated H2SO4 = (0.1 M x 0.1 L) / 18 M ≈ 0.55 mL
step 2: Measure and Transfer the Concentrated H2SO4
Using a 1 mL pipette, measure and transfer 0.55 mL of concentrated H2SO4 into a 100 mL volumetric flask.
step 3: Add Distilled Water
Slowly add distilled water to the flask until the volume reaches 100 mL. Make sure to mix the solution well after each addition.
step 4: Mix and Label the Solution
Mix the solution well and label the flask with the concentration (0.1 M H2SO4) and date.
Safety Precautions
- Handle concentrated H2SO4 with care, as it can cause severe burns and eye damage.
- Wear protective gloves and goggles when handling the acid.
- Prepare the solution in a well-ventilated area, away from any flammable materials.
Conclusion
In this article, we have discussed the preparation of 0.1 M H2SO4 solution. By following the steps outlined above, you can accurately prepare this commonly used solution for your laboratory applications. Remember to always follow safety precautions when handling concentrated H2SO4.
