A volatile liquid has an enthalpy of vaporization of 31.6
kJ/mol, and a vapor pressure of...
A volatile liquid has an enthalpy of vaporization of 31.6
kJ/mol, and a vapor pressure of
224 mmHg at a temperature of 25.0 oC. What is the normal boiling
point of the liquid?
Pure liquid water has a heat of vaporization of x kJ/mol. The
vapor pressure of water is 23.756 torr at room temperature (25 °C).
What would the vapor pressure of water be expected to be at 37 °C?
How would the vapor pressure be changed if 1.0 gram of NaCl were
added to a volume of 100 mL of water?
7. (5 pts) A liquid with an enthalpy of vaporization, Hv, of 52.80
KJ/mole has a normal boiling point at 38.38C. Its vapor pressure
at 24.86C is:
(a) 166.09 Torr (b) 233.91 Torr (c) 301.4 Torr (d) 374.5 Torr
Ammonia (NH3) boils at -33.4 oC. It has an
enthalpy of vaporization of 23.35 kJ/mol. The liquid has a specific
heat of 80.8 J/mol oC, and the gas has a specific heat
of 35.06 J/mol 0C.
A 34.06 gram sample of ammonia was heated, at 1 atmosphere
pressure, from -40 oC to room temperature (25
oC). How many kJ of thermal energy did the
sample absorb from the surroundings in this process?
I got 101263.8J (101.3kJ) and it is NOT...
At 180°C the heat of vaporization, AvapH of a certain liquid is
14.4 kJ mol'1 . The molar volumes of the liquid and the vapour at
the boiling point are 115 cm3 mol'1 and 14.5 dm3 mol' 1 ,
respectively. Estimate the change in the boiling point of the
liquid at 180°C per bar change in atmospheric pressure, dT/dp using
the Clayperon equation. Briefly discuss the physical significance
of the sign of dT/dp .
The standard enthalpy of vaporization of Freon-11, CFCl3, is
25.21 kJ/mol at its normal boiling point of 17°C. What is the
change of entropy for 1 mol of liquid Freon-11 when it vaporizes at
its normal boiling point?
For the process Cl2(g) → 2Cl(g), Question 18 options: ΔH is +
and ΔS is + for the reaction. ΔH is + and ΔS = 0 for the reaction.
ΔH is – and ΔS is – for the reaction. ΔH is –...
Vapor Pressure and Heat of Vaporization
a. The vapor pressure of acetone at 20° C is 185.5 mm Hg, and
the vapor pressure of water at this same temperature is 17.5 mm Hg.
Predict which of the two liquids will have a higher normal boiling
point. Use a molecular point of view to explain your
prediction.
b. Use data from the table below and make a graph of the lnP
versus the reciprocal of absolute temperature. Use the slope from...
The vapor pressure of liquid bromine (Br2) at 9.30 °C is 100.0
torr and enthalpy of vaporization is 30.91 kJ/mole. Calculate the
normal boiling point of Br2. Be sure to enter a unit with your
answer.
Ethanol boils at 73.30 degrees Celsius at atmospheric pressure.
The heat of vaporization, ΔΗvapis 39.3 kJ/mol. The
melting point at atmospheric pressure is -114.10 degrees Celsius.
The triple point is at pressure 0.00043 Pa and temperature -123.00
degrees Celsius. The density of liquid Ethanol at 25.0 degrees
Celsius is 0.783 gr/cm3.
What is the vapor pressure of liquid ethanol at 30.00 degrees
Celsius?
The heat of fusionΔΗmeltis 4.9 kJ/mol. Calculate the
change in volume brought about by a transition from...