The manometer shown was open on both sides prior to being attached to the flask
ID: 475342 • Letter: T
Question
The manometer shown was open on both sides prior to being attached to the flask containing liquid (mercury levels were equal, ha0). It was then connected to the flask and used to test the vapor pressure of an unknown liquid at different temperatures. The results from the experiment are in the table below: Temperature Value of h from 5.0 C 58.0 mmHg 151.0 mmHg 25.0 °C 37.0 C 253.0 mmHg Use the data to determine the vapor pressure of this liquid at the three temperatures listed: Number vapor pressure at 5 ec mmHg Number Vapor pressure at 25 C mmHg Atmospheric pressure 766.3 mmHg Number Yes Do any of these temperatures exceed the boiling point for this liquid? No Vapor pressure at 37 °C E mmHgExplanation / Answer
The vapor pressure is the pressure exerted on the surface of liqud and in the present case
P=pgh, p= density of liqud=13600 kg/m3 and g=9.8 m/sec2 and h= height difference
No the vapor pressure has not exceeded the boiling point of liquid. since this has to be equal to 760 mmHg Which will be equal to 1 atm.
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