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To set up for this lab experiment, wear the appropriate personal protective equipment, including a lab coat, chemical splash goggles, and gloves. All solutions for this lab must be prepared inside the chemical hood.
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First, prepare 50 mL of an 8 M solution of nitric acid. Carefully pour approximately 30 mL of the stock 15.7 M nitric acid into a 100-mL beaker.
Note: This will make it easier to pour the concentrated nitric acid into the graduated cylinder without spilling.
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Measure 25.5 mL of stock nitric acid using a 50-mL graduated cylinder and transfer it into a 50-mL volumetric flask. Fill the remainder of the volumetric flask with deionized water until it reaches the appropriately marked line.
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Place a small stir bar in the flask and set the flask on a stir plate. Mix the solution until it appears homogeneous.
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Label a 150-mL glass bottle with the solution name and concentration. Transfer the nitric acid solution from the volumetric flask to the bottle using a powder funnel.
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Prepare 150 mL of 3 M NaOH solution. Weigh 18 g of NaOH pellets using a top-loading balance and transfer the NaOH to a 250-mL Erlenmeyer flask.
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Measure 150 mL of deionized water into the Erlenmeyer flask. Add a magnetic stir bar to the flask and set it on a stir plate.
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Mix the solution until the pellets dissolve and the solution appears homogeneous. Then, turn off the stir plate.
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Label a 250-mL polyethylene bottle '3 M NaOH' and carefully pour the solution into the bottle. Cap the bottle and store it appropriately.
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Prepare 50 mL of 6.05 M hydrochloric acid solution. First, pour ~30 mL of stock 12.1 M hydrochloric acid into a 100-mL beaker. Then, use a 25-mL graduated cylinder to carefully measure 25 mL of the stock hydrochloric acid. Transfer the hydrochloric acid to a 50-mL volumetric flask.
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Fill the remainder of the volumetric flask with deionized water until it reaches the marked line on the neck of the flask. Place a stir bar in the flask and set the flask on the stir plate.
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Stir the solution until it appears homogeneous. Then, transfer the solution to the labeled polyethylene bottle, cap it and store until needed.
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Finally, prepare 50 mL of 5.93 M sulfuric acid solution. Carefully pour ~20 mL of glacial sulfuric acid into a 100-mL beaker. Then, measure 16.5 mL of the sulfuric acid using a 25-mL graduated cylinder and carefully transfer the sulfuric acid to a 50-mL volumetric flask.
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Fill the remainder of the flask with deionized water until it reaches the full line on the neck of the flask. Place a magnetic stir bar in the flask, set it on the stir plate, and stir the solution until it appears homogeneous.
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Label a 125-mL polyethylene bottle with the solution name and concentration, and carefully transfer the sulfuric acid from the volumetric flask to the bottle. Cap the bottle and store it for later.
