Exp 16 Molar Mass from Freezing Point UPDATED

Remove the microspatula and insert the thermometer 10

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Unformatted text preview: solution. Remove the microspatula and insert the thermometer. 10. When the temperature of the solution drops to 85°C, start the timer and record the temperature every 20 seconds until you have reached the freezing point of the naphthalene-sulfur solution. This is indicated by six (6) constant temperature measurements. REMINDER! For optimum measurements, stir the solution constantly with the thermometer for a few seconds before recording the temperature. 11. Reheat the water bath until the naphthalene-sulfur has melted completely. Shut off the flame; carefully take out the thermometer and clean it as directed by your instructor. Remove the test tube from the water bath and cool it to room temperature. Once the contents of the test tube have solidified completely, discard the ENTIRE test tube in the designated waste...
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This document was uploaded on 02/23/2014 for the course CHEMISTRY 1121L at St. Johns Duplicate.

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