0.1 M Sulphuric Acid Preparation
Introduction
Sulphuric acid (H2SO4) is a strong acid widely used in various fields such as chemistry, biology, and industry. In laboratory settings, sulphuric acid is often required in diluted forms for specific experiments and reactions. In this article, we will describe the preparation of 0.1 M sulphuric acid solution.
Materials
- Concentrated sulphuric acid (H2SO4, 98%)
- Distilled water
- Volumetric flask (1 L)
- Pipette (10 mL)
- Balance
Preparation
Step 1: Calculate the Volume of Concentrated Sulphuric Acid Required
To prepare 0.1 M sulphuric acid solution, we need to calculate the volume of concentrated sulphuric acid required. The molar mass of sulphuric acid is 98.08 g/mol.
Molecular formula: H2SO4 Molar mass: 98.08 g/mol Desired concentration: 0.1 M Desired volume: 1 L = 1000 mL
Using the formula:
Molarity (M) = Number of moles of solute / Liters of solution 0.1 M = x / 1 L
Number of moles of solute = Molarity x Liters of solution = 0.1 M x 1 L = 0.1 mol
Mass of sulphuric acid required = Number of moles x Molar mass = 0.1 mol x 98.08 g/mol = 9.808 g
To prepare 0.1 M sulphuric acid solution, we need 9.808 g of concentrated sulphuric acid.
Step 2: Weigh the Concentrated Sulphuric Acid
Using a balance, accurately weigh 9.808 g of concentrated sulphuric acid into a beaker.
Step 3: Add the Concentrated Sulphuric Acid to the Volumetric Flask
Using a pipette, carefully transfer the weighed concentrated sulphuric acid into a 1 L volumetric flask.
Step 4: Add Distilled Water to the Volumetric Flask
Slowly add distilled water to the volumetric flask while gently swirling the mixture. Continue adding water until the volume reaches 1 L.
Step 5: Mix Well and Label the Solution
Mix the solution well to ensure complete dissolution of the sulphuric acid. Label the solution as 0.1 M sulphuric acid and store it in a cool, dry place.
Precautions
- Handle concentrated sulphuric acid with care, as it is a highly corrosive and toxic substance.
- Wear protective gloves, goggles, and a lab coat when handling sulphuric acid.
- Dispose of any spilled sulphuric acid according to local regulations and guidelines.
Conclusion
By following these steps, you have successfully prepared 0.1 M sulphuric acid solution. This solution can be used in various laboratory experiments and reactions. Always handle concentrated sulphuric acid with care and follow proper safety protocols.
