0.1M H2SO4 Preparation
Introduction
Sulfuric acid (H2SO4) is a strong acid widely used in various laboratory applications, including chemical synthesis, analytical chemistry, and electrochemistry. In this article, we will discuss the preparation of 0.1M H2SO4 solution, a commonly used concentration in many laboratory experiments.
Materials
- Sulfuric acid (H2SO4) 18M or 98% concentration
- Distilled water
- A 100 mL or 1 L volumetric flask
- A pipette or measuring cylinder
- A balance (optional)
Preparation of 0.1M H2SO4 Solution
Step 1: Calculate the amount of H2SO4 required
To prepare 0.1M H2SO4 solution, we need to calculate the amount of H2SO4 required. The molecular weight of H2SO4 is 98.08 g/mol.
Molarity (M) = number of moles of solute per liter of solution = 0.1 mol/L
To prepare 1 liter of 0.1M H2SO4 solution, we need:
0.1 mol/L × 1 L = 0.1 mol
Molecular weight of H2SO4 = 98.08 g/mol Mass of H2SO4 required = 0.1 mol × 98.08 g/mol = 9.808 g
Step 2: Weigh the required amount of H2SO4
Using a balance, accurately weigh out 9.808 g of H2SO4.
Step 3: Add H2SO4 to the volumetric flask
Using a pipette or measuring cylinder, slowly add the weighed H2SO4 to a 1 L volumetric flask.
Step 4: Add distilled water to the volumetric flask
Carefully add distilled water to the flask until the volume reaches 1 L.
Step 5: Mix well and label the solution
Mix the solution well by swirling the flask gently. Label the flask with the solution concentration, volume, and date.
Precautions
- Handle sulfuric acid with care, as it is a strong acid and can cause skin burns and eye damage.
- Wear protective gloves, goggles, and a lab coat when handling sulfuric acid.
- Always add acid to water, never add water to acid to avoid splashing and violent reactions.
- Dispose of waste sulfuric acid and its solutions according to local regulations and guidelines.
By following these steps, you can prepare a 0.1M H2SO4 solution accurately and safely. This solution can be used for various laboratory applications, including titrations, electrochemical experiments, and chemical synthesis.
