CREATE A SCHEMATIC DIAGRAM FOR THIS PROCEDURE: C. Preparation and storage of standard solutions 1. Use the weighed and transferred NaCl powder in procedure B. Dissolve it in about 10 mL distilled water. Use a stirring rod to gently stir the solution until it has been dissolved to an extent. Make sure you will not incur any noise while stirring. 2. When the NaCl powder is partially dissolved, transfer the resulting solution into a 100 mL volumetric flask. Use a stirring rod and funnel. 3. Repeat steps 1 and 2 until no NaCl remains in the beaker and until you are almost at the mark of the volumetric flask. 4. Rinse the last portion of the solution from the stirring rod into the volumetric flask with a stream of water from the wash bottle. Rinse the funnel and remove it. Dilute the solution in the flask using a Pasteur pipette until the bottom of the meniscus is even with the graduation mark. 5. Put a stopper on the volumetric flask. Invert the glassware up and down around five times, making sure there are no leaks. 6. Put the diluted solution in a reagent bottle, then properly label the solution. Calculate and note the concentration of the solution. Show your reagent bottle to your instructor for checking.
CREATE A SCHEMATIC DIAGRAM FOR THIS PROCEDURE:
C. Preparation and storage of standard solutions
1. Use the weighed and transferred NaCl powder in procedure B. Dissolve it in about 10 mL distilled water. Use a stirring rod to gently stir the solution until it has been dissolved to an extent. Make sure you will not incur any noise while stirring.
2. When the NaCl powder is partially dissolved, transfer the resulting solution into a 100 mL volumetric flask. Use a stirring rod and funnel.
3. Repeat steps 1 and 2 until no NaCl remains in the beaker and until you are almost at the mark of the volumetric flask.
4. Rinse the last portion of the solution from the stirring rod into the volumetric flask with a stream of water from the wash bottle. Rinse the funnel and remove it. Dilute the solution in the flask using a Pasteur pipette until the bottom of the meniscus is even with the graduation mark.
5. Put a stopper on the volumetric flask. Invert the glassware up and down around five times, making sure there are no leaks.
6. Put the diluted solution in a reagent bottle, then properly label the solution. Calculate and note the concentration of the solution. Show your reagent bottle to your instructor for checking.
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