Before you start
Prepare a copper(II) nitrate dilution
Use a volumetric pipette and flask to prepare 100.00 mL of 0.2000 mol/L copper(II) nitrate from a 2.000 mol/L stock solution.
- Time
- about 12 minutes
- Level
- Intermediate
- Steps
- 3
What you are doing
Transfer a calibrated aliquot, dilute it to the mark, and mix a solution with deterministic concentration evidence.
Procedure
- Condition and transfer the aliquotCondition the empty 10.00 mL pipette with stock solution, measure a total 10.00 mL aliquot, and deliver it into the volumetric flask.
- Dilute to the mark and mixAfter the stock aliquot is in the flask, add distilled water to the 100.00 mL mark and invert the flask 10 times.
- Check the prepared solutionUse the displayed final volume and concentration evidence to confirm that the preparation is within the registered tolerances.
On the bench
- 2.000 mol/L copper(II) nitrate stock
- 10.00 mL volumetric pipette
- 100.00 mL volumetric flask
- Distilled water
How this is assessed
- Conditions the transfer pipette and delivers the complete calibrated stock aliquot in a valid order.
- Reaches the registered final-volume and concentration tolerances and mixes the prepared solution.
Ways to work
- Every apparatus action has a keyboard control and a text state summary.
- Tolerance and completion are communicated without relying on color.