To prepare a 1.25 percent solution of sulfuric acid, you would need to know the desired volume of the solution. Here's the general procedure for preparing a 1.25 percent sulfuric acid solution:
Determine the desired volume of the solution. Let's assume you want to prepare 500 mL of the solution.
Calculate the amount of sulfuric acid needed. A 1.25 percent solution means that 1.25 g of sulfuric acid is present in 100 mL of the solution. Therefore, for 500 mL of solution, the amount of sulfuric acid required would be: (1.25 g / 100 mL) x 500 mL = 6.25 g
Obtain the appropriate amount of concentrated sulfuric acid. Sulfuric acid is commonly available in concentrated form, typically around 95-98 percent concentration. Ensure you handle it with care as it is a highly corrosive and dangerous substance.
Measure the calculated amount of concentrated sulfuric acid. Use a laboratory-grade balance to measure 6.25 grams of concentrated sulfuric acid. Always follow proper safety protocols and wear appropriate personal protective equipment (PPE) when working with hazardous chemicals.
Transfer the measured sulfuric acid to a suitable container. You can use a beaker or flask that can accommodate the volume of the solution you want to prepare.
Add distilled water to the container. Gradually add distilled water while stirring to dilute the sulfuric acid. Add water until the total volume of the solution reaches 500 mL (or your desired volume).
Stir the solution well to ensure thorough mixing.
Properly label the container with the concentration, date, and any necessary hazard warnings.
Remember, working with sulfuric acid requires caution and adherence to safety guidelines. It is advisable to perform this procedure in a well-ventilated laboratory setting, wearing appropriate PPE and following proper handling and disposal procedures for chemicals.