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NOTE! For optimum measurements, stir the solution constantly with the thermometer for a
few seconds before recording the temperature. CAUTION! Occasional stirring will cause the temperature to fluctuate resulting in poor data. 6. Continue recording the temperature every 20 seconds until you have reached the freezing point of
the solution. This is indicated by six (6) constant temperature measurements.
7. Reheat the water bath and perform Steps 8 – 11 for the naphthalene-sulfur solution. B) Freezing Point of Naphthalene-Sulfur
8. In a tared 50 mL beaker, weigh out approximately 1 gram of sulfur.
9. Once the naphthalene has completely melted (~90-95ºC), shut off the flame and add all of the
sulfur to the test tube using the powder funnel. Use a microspatula to quickly stir the mixture until
the sulfur has dissolved completely and you have a clear uniform yellow...
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This document was uploaded on 02/23/2014 for the course CHEMISTRY 1121L at St. Johns Duplicate.
- Spring '14