how would you dilute a concentrated sulphuric acid solution
How would you dilute a concentrated sulphuric acid solution
Answer:
Diluting a concentrated sulphuric acid solution must be done with caution and following safety procedures due to the corrosive nature of sulphuric acid. Here is a step-by-step guide on how to properly dilute concentrated sulphuric acid:
1. Safety Precautions:
Before beginning, ensure you are wearing personal protective equipment (PPE) such as gloves, goggles, and a lab coat. Work in a well-ventilated area or in a fume hood to prevent inhalation of fumes.
2. Equipment:
Prepare the necessary equipment including a volumetric flask, distilled water, concentrated sulphuric acid, and a stirring rod.
3. Add Acid to Water:
Always remember the golden rule - “Add acid to water.” Slowly pour the concentrated sulphuric acid into a significant volume of distilled water. Stir gently with the stirring rod while pouring to aid in mixing.
4. Dilution Process:
Continue to add the acid slowly to the water while stirring continuously. This helps prevent rapid heat generation that can occur during the dilution process.
5. Cooling:
If the solution heats up significantly during mixing, allow it to cool before continuing. It is crucial to monitor the temperature during dilution.
6. Final Dilution:
Once the acid is completely added and mixed, dilute to the desired concentration with distilled water. Always ensure proper mixing to obtain a homogenous solution.
7. Final Steps:
After dilution, mix thoroughly and check the pH if necessary. Label the container with the contents and concentration of the solution. Clean up the area and dispose of any waste materials properly.
By following these steps correctly, you can safely dilute a concentrated sulphuric acid solution without causing any hazardous situations. Remember to handle all chemicals with care and follow the guidelines provided by your institution or laboratory.