Jaytu What best describes the sample at point D? temperature (°C) 140 120 100 80 60 C 40 B 20 0' -201 A -40 D heat absorbed pure liquid the first bubbles of steam start to form E

12.) which has lowest boiling point according to ta ble? Su bstonce Vaporplessure at 35%C6mmHq) 23 650 92 IV 139

The fragment of H2O phase diagram is shown. What transition (e.g. liquid->solid, solid->gas... or none) would be observed when a sample of H2O initially at 0.003 atm and -5 C is heated at constant pressure to 0 C?

What is the answer to this question?

Suppose the vapor pressure of a substance is measured at twodifferent temperatures. (a) By using the Clausius–Clapeyronequation (Equation 11.1) derive the following relationshipbetween the vapor pressures, P1 and P2, and the absolute temperaturesat which they were measured, T1 and T2:   (b) Gasoline is a mixture of hydrocarbons, a componentof which is octane (CH3CH2CH2CH2CH2CH2CH2CH3). Octane has a vapor pressure of 13.95 torr at 25 °C and a vaporpressure of 144.78 torr at 75 °C. Use these data and the equationin part (a) to calculate the heat of vaporization of octane.(c) By using the equation in part (a) and the data given in part(b), calculate the normal boiling point of octane. Compareyour answer to the one you obtained from Exercise 11.81.(d) Calculate the vapor pressure of octane at -30 °C.

Could you help me with #10? I included a picture of the phase diagram that was given. I attempted the question but I'm not sure if I got it right.

Only #4

This gra v ows how the vapor pressure of three liquids varies with temperature: 900- 800- 700 600 500 400 300- - isopropyl acetate benzene 200 100- tetrahydrofuran 50 60 temperature, °C Use the graph to answer the following questions: most volatile: choose one Which liquid is the most volatile? Which is the least volatile? least volatile: choose one isopropyl acetate: What is the normal boiling point of each liquid? Note: your answer must be within 1°C of the exact answer to be graded correct. benzene: tetrahydrofuran: O more Suppose a beaker of benzene is put inside a sealed tank containing benzene gas at 55. degree C and 884. torr. After ten minutes, will there be more liquid in the beaker, less liquid, or the same amount? O less O the same vapor pressure, torr

Liquid butane (C4H10) is stored in cylinders to be used as afuel. The normal boiling point of butane is listed as -0.5 °C.(a) Suppose the tank is standing in the sun and reaches atemperature of 35 °C. Would you expect the pressure in thetank to be greater or less than atmospheric pressure? Howdoes the pressure within the tank depend on how muchliquid butane is in it? (b) Suppose the valve to the tank isopened and a few liters of butane are allowed to escape rapidly.What do you expect would happen to the temperatureof the remaining liquid butane in the tank? Explain.(c) How much heat must be added to vaporize 250 g ofbutane if its heat of vaporization is 21.3 kJ/mol? What volumedoes this much butane occupy at 755 torr and 35 °C?

Illustrate the phase diagram of acetone and explain your findings.