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Intermolecular Forces and Physical Properties

Q. Consider two empty containers A and B whose volumes are 10mL and 20mL respectively. 1 mL of liquid water is put into each container and the temperature of each container is adjusted to 20°C. The gas pressure in container B, which still has some liquid water in it, is found to be 17 torr. How would the pressure in container A and the amount of liquid water in container A compare to that of container B?

Solved • Jan 28, 2020

Clausius-Clapeyron Equation

Q. An unknown liquid has a vapor pressure of 88mmHg at 45°C and 39 mmHg at 25°C. What is its heat of vaporization? a) 2000 J/mol b) 2000 kJ/mol c) 32.000 kJ/mol d) 32 kJ/mol

Solved • Jan 28, 2020

Intermolecular Forces and Physical Properties

Q. What is the vapor pressure of carbon disulfide at its normal boiling point? a) Not enough information b) 1.0 atm c) 22.4 atm d) 2.0 atm

Solved • Jan 28, 2020

Clausius-Clapeyron Equation

Q. 3. Water has a heat of vaporization (ΔHvap) of 44.01 kJ mol^-1 and boils at 100 degrees C at sea level. What is the boiling point of water (in degrees C to one decimal place) at the top of Mount Everest where the atmospheric pressure in only 34% as strong as the pressure at sea level?

Solved • Sep 20, 2019

Intermolecular Forces and Physical Properties

Q. Rank the following liquids by vapor pressure from lowest to highest: C5H12, CH4, C3H8, C2H6, C4H10.

Solved • Jan 28, 2020

Chemistry Gas Laws

Q. In a closed vessel containing water, the pressure is 18 torr. If we add more water to the vessel, this equilibrium pressure would... a) decrease b) increase c) change, but it is not possible to know if it will increase or decrease without more information d) remain the same

Solved • Jan 28, 2020

Intermolecular Forces and Physical Properties

Q. Which would have a higher vapor pressure: ethanol (C2H5OH) or dimethyl ether (CH3OCH3)?

Solved • Jan 28, 2020