Report For Molar Mass Experiment Mass Of Ethanol Flask And Foil G Mass Of Empty Flask And Foil G Mass Of Ethanol 1 (31.94 KiB) Viewed 28 times
Report For Molar Mass Experiment Mass Of Ethanol Flask And Foil G Mass Of Empty Flask And Foil G Mass Of Ethanol 2 (35.41 KiB) Viewed 28 times
REPORT FOR MOLAR MASS EXPERIMENT Mass of ethanol, flask, and foil, (g) Mass of empty flask and foil, (g) Mass of ethanol, (g) Temperature, (K) Barometric pressure, (mm Hg) Volume of flask, (L) Experimental molar mass of ethanol Percent error, (%) NAME Accepted SECTION 126.3010 126.0 774 367.65 748.5 0.155 SAMPLE CALCULATIONS (Use separate sheets if necessary) value of 12 (L mm Hg mol-1 K -17 = 62.363 59 QUESTIONS FOR MOLAR MASS EXPERIMENT NAME 1. Why should the hole in the aluminum foil used as a cap in this experiment be as small as possible? 60 Why should you place your finger over the hole while transferring the flask from the hot to cold water bath? 2. Ethoxyethane is very volatile, it boils at 34-5°C, and very flammable. An experiment was performed using a sample of ethoxyethane in a flask heated to 40.0°C. After cooling, the combined mass of the flask, foil cap, and condensed ether was 95-9588 g. The empty flask and foil cap massed 95.2456 g and had a volume of 247.2 mL. The atmospheric pressure was 746.5 torr. Use these data to calculate the approximate molar mass of ethoxyethane.
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!