How do you prepare a standard solution for quantitative analysis?

Steps to Prepare a Standard Solution

1. Choose the substance
   • Pick a pure and stable chemical (a primary standard if possible).
2. Decide the concentration and volume
   • Decide how strong your solution should be and how much you need.
3. Weigh the chemical
   • Use an accurate balance to measure the right amount.
4. Dissolve the chemical
   • Put it in a container and dissolve in a small amount of distilled water.
5. Transfer to a volumetric flask
   • Pour the solution into a flask of the desired final volume.
   • Rinse the container with water and add the rinses to the flask to avoid loss.
6. Add water to the mark
   • Carefully fill with water up to the calibration mark on the flask.
7. Mix thoroughly
   • Swirl or invert the flask several times to ensure it’s uniform.
8. Label and store
   • Write the chemical name, concentration, and date.
   • Store in a clean, closed container.
9. Standardize if needed
   • If it’s not a primary standard, check its exact concentration using a known standard solution.