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Perform this part of the experiment while waiting for Part I to cool down. Remem

ID: 528322 • Letter: P

Question

Perform this part of the experiment while waiting for Part I to cool down. Remember to take temperature readings in Part I every 5 degrees! To measure relative vapor pressure, we will determine the amount of time required for the same number of molecules of each liquid to evaporate. Before carrying out the experiment, it is necessary for you to determine what volumes of ethanol, methylene chloride, and acetone contain the same number of molecules as are contained in 1 microliter of water. The data in the table will enable you to make the calculations. Before you start, discuss with your partner how surface detects and curvature of the watch glass could affect the rate of vaporization. Do you think it will make a difference? Is there any way you could prove or disprove your theory?

Explanation / Answer

You just have to multiply the density of the substance by its volume in the equilibrium phase to complete the chart.

Acoording to the info given and supposing that the equilibrium between the 5 compunds in the chart (20% each) the answer will be 0.156mL of ethanol,,0.157mL of acetone and and 0.265mL of dichlormethane. (CH2Cl2)