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Unformatted text preview: • Once all liquid disappears, continue heating for 1 min • Record exact temp of water to the nearest 0.1 degrees Celsius and remove flask from bath • Dry the outside of the flask and let it cool to room temperature so vapour condenses • Weight flask assembly 15+/-5 minutes after removing from bath • Empty condensed liquid into waste bucket and fill empty flask to the brim with water • Measure volume of water in each flask accurately with graduated cylinder • Do 3 trials using new set of equipment and record whole assembly again • Repeat all steps using unknown instead of methanol • Remember to record # of unknown (3 trials required) • Record barometric pressure given by lab instructor • Clean the 3 flasks with soap and rinse with tap water then deionized water • Return to store room as dry as possible...
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- Spring '10
- Chemistry, Erlenmeyer f lask, Chris Goudy, lask assembly