d Fill a 400 mL beaker 23 full with hot tap water and place the beaker on the

D fill a 400 ml beaker 23 full with hot tap water and

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d. Fill a 400 mL beaker 2/3 full with hot tap water and place the beaker on the hot plate . e. Use a utility clamp to attach the test tube containing the 2-propanol to the ring stand. Lower the test tube into the hot tap water until it is about 1 cm from the bottom of the 400 mL beaker. The water level in the beaker should be about 2 cm above the 2-propanol level in the test tube. f. Fasten the Temperature Probe in a second utility clamp. Lower the Temperature Probe into the test tube until the tip of the probe is about 0.5 cm above the surface of the 2-propanol. Fasten the utility clamp to the ring stand with the Temperature Probe in this position. g. Turn the hot plate to the temperature setting suggested by your instructor.
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Identifying a Pure Substance Investigating Chemistry through Inquiry 5 - 3 S 5. Collect data. a. Begin data collection. b. When the water comes to a rolling boil, turn the hot plate setting down to a setting just high enough to maintain boiling. c. When the 2-propanol has boiled with noticeable bubbling for 100 s or until about 3/4 of it has boiled away, which ever happens first, stop data collection. d. Carefully raise the test tube above the water . e. Allow the beaker, water, and hot plate to cool before handling them. 6. Determine the boiling temperature of 2-propanol: a. Select the flat part (plateau) of your curve.
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