Put the following steps for preparing the 0.500 M HCl using the volumetric flask

Question

Put the following steps for preparing the 0.500 M HCl using the volumetric flask and pipet in the correct order.
12345 Stopper the flask and invert 20-30 times to mix the solution.
12345 Add distilled water to just below the calibration mark.
12345 Use an eyedropper to add distilled water so that the bottom of the meniscus is on the calibration line.
12345 Transfer 5.00 mL of 5.00 M HCl to the flask using the 5 mL pipettor or volumetric pipet.
12345 Clean the 50 mL volumetric flask and rinse with distilled water. Do not dry it.

Please note the flask should be kept stoppered except when transferring liquid to prevent evaporation. If you are diluting a concentrated acid fill the flask about half full with distilled water and then add the acid to the flask before diluting to the mark with distilled water.

Explanation / Answer

The correct order is:

1. Clean the 50 mL volumetric flask and rinse with distilled water. Do not dry it.

2. Transfer 5.00 mL of 5.00 M HCl to the flask using the 5 mL pipettor or volumetric pipet.

3. Add distilled water to just below the calibration mark.

4. Use an eyedropper to add distilled water so that the bottom of the meniscus is on the calibration line.

5. Stopper the flask and invert 20-30 times to mix the solution.

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