0.1N H2SO4 Solution Preparation
Introduction
Sulfuric acid (H2SO4) is a strong acid widely used in various laboratory applications, such as titrations,chemical reactions, and cleaning. A 0.1N H2SO4 solution is a common concentration used in many experiments. In this article, we will provide a step-by-step guide on how to prepare a 0.1N H2SO4 solution.
Materials
- Sulfuric acid (H2SO4) - concentrated (98%)
- Distilled water
- Volumetric flask (100 mL)
- Pipette or burette
- Balance or weighing scale
- Gloves and safety goggles (optional)
Preparation of 0.1N H2SO4 Solution
Step 1: Calculate the Amount of H2SO4 Needed
To prepare 100 mL of 0.1N H2SO4 solution, we need to calculate the amount of H2SO4 required. The normality of a solution is defined as the number of equivalents per liter of solution. Since we want to prepare a 0.1N solution, we need to calculate the number of equivalents of H2SO4 required.
Molecular weight of H2SO4 = 98.08 g/mol Equivalent weight of H2SO4 = 49.04 g/equivalent (since H2SO4 is a dibasic acid)
Number of equivalents required = Normality x Volume (in liters) = 0.1 x 0.1 L = 0.01 equivalents
Mass of H2SO4 required = Number of equivalents x Equivalent weight = 0.01 x 49.04 g = 0.4904 g
Step 2: Weigh the Required Amount of H2SO4
Using a balance or weighing scale, accurately weigh out 0.4904 g of H2SO4.
Step 3: Dissolve the H2SO4 in Water
Using a pipette or burette, slowly add the weighed H2SO4 to approximately 50 mL of distilled water in a volumetric flask. Swirl the flask gently to dissolve the H2SO4 completely.
Step 4: Dilute the Solution to the Mark
Add more distilled water to the flask until the solution reaches the 100 mL mark. Mix the solution well to ensure complete dissolution.
Step 5: Mix and Label the Solution
Mix the solution well and label it as 0.1N H2SO4 solution.
Safety Precautions
- Handle sulfuric acid with care, as it is a strong acid that can cause skin burns and eye damage.
- Wear gloves and safety goggles when handling H2SO4.
- Perform the preparation in a well-ventilated area.
Conclusion
By following these steps, you can successfully prepare a 0.1N H2SO4 solution. Remember to handle the acid with care and follow proper safety protocols to avoid accidents.
