Question
In: Chemistry
The vapor pressure of water at 32 degrees C is 4.76 kPa. A glass of water...
The vapor pressure of water at 32 degrees C is 4.76 kPa. A glass of water in sealed in a a 1.00L container filled with air at 32 degree C. After the water comes to equilibrium with the air in the container, the total pressure is 1 bar and there is 500 g of liquid water in the glass.
a. What will be the partial pressure of water vapor in the container?
b. If 35.0 g of ethylene glycol is dissolved in the water, will the vapor pressure increase or decrease?
c. If 35.0 g of ethylene glycol is dissolved in the water, will the mass of liquid water be decreased or increased?
d. Calculate change in the mass of the liquid water after it has returned to equilibrium.
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
1) At 24 C the vapor pressure of water is 3 kPa. The vapor pressure of...
1) At 24 C the vapor pressure of water is 3 kPa. The vapor
pressure of water over a sample is 2 kPa, what is the water
activity of the sample?
2) The water activity above a saturated NaCl solution is 0.75.
If a sample is enclosed in a jar with the NaCl solution and
equilibrium is achieved, what is the water activity of the sample?
NaCl and the sample are in separate containers within the jar.
Estimate the vapor pressure of seawater at 20°C given that the vapor pressure of pure water is 2.338 kPa at that temperature
Estimate the vapor pressure of seawater at 20°C given that the vapor pressure of pure water is 2.338 kPa at that temperature and the solute is largely Na+ and Cl- ions, each present at about 0.50 mol/dm3.
The vapor pressure of ethonal (C2H5OH) is 672torr at 75°C. The vapor pressure of water is...
The vapor pressure of ethonal (C2H5OH) is 672torr at
75°C. The vapor pressure of water is 289torr at the same
temperature.
Ethonal and water forms solution that behave like ideal solution.
Calc vapor pressure of ethonal and water above the solution at
75°C.
Given that the vapor pressure of water is 17.54 Torr at 20 °C, calculate the vapor-pressure...
Given that the vapor pressure of water is 17.54 Torr at 20 °C,
calculate the vapor-pressure lowering of aqueous solutions that are
2.50 m in (a) sucrose, C12H22O11, and (b) calcium chloride. Assume
100% dissociation for electrolytes.
Given that the vapor pressure of water is 17.54 Torr at 20 °C, calculate the vapor-pressure...
Given that the vapor pressure of water is 17.54 Torr at 20 °C,
calculate the vapor-pressure lowering of aqueous solutions that are
2.30 m in (a) sucrose, C12H22O11, and (b) aluminum chloride. Assume
100% dissociation for electrolytes.
At 25 C, the vapor pressure of pure water is 23.8 torr. What is the vapor...
At
25 C, the vapor pressure of pure water is 23.8 torr. What is the
vapor pressure of an aqueous solution that is 8.00% NaCl by mass?
Assume the NaCl is 100% dissociated.
The vapor pressure of liquid benzene is 17.7 kPa at 30 ºC and 37.7 kPa at...
The vapor pressure of liquid benzene is 17.7 kPa at 30 ºC and
37.7 kPa at 50 ºC. a) Calculate the enthalpy of vaporization of
benzene. b) Estimate the vapor pressure at 10 ºC [use your answer
from part (a)]. c) Estimate the normal boiling point of benzene
(use a vapor pressure of 1 bar and use the result from part
(a)]
The table below shows the vapor pressures, VP (kPa) for n‐hexane and n‐octane. Vapor Pressure (kPa)...
The table below shows the vapor pressures, VP (kPa) for n‐hexane
and n‐octane.
Vapor Pressure (kPa)
Vapor Pressure (kPa)
Temp (C)
n‐Hexane
n‐Octane
68.7
101
13
79.4
137
23
93.3
197
37
107.2
284
58
121.1
400
87
125.7
456
101
Source. J. B. Maxwell, Data Book on Hydrocarbons
(a) Assuming ideal solution and gas behavior, construct Txy and
xy diagrams for this system at
101 kPa.
(b) When a liquid containing 30 mol% n‐Hexane is heated, what is
the...
Superheated vapor enters the turbine at 10 MPa, 480°C, and the condenser pressure is 7.5 kPa...
Superheated vapor enters the turbine at 10 MPa, 480°C, and the
condenser pressure is 7.5 kPa of a steam Rankine power cycle.
Isentropic efficiencies of the turbine and pump are 84% and 73%,
respectively. Determine for the cycle
a. Sketch the cycle of a T-s diagram. Indicate the isobars with
their values and the values for temperature and entropy.
b. The heat transfer to the working fluid passing through the
steam generator, in kJ per kg of steam flowing.
c....
Superheated vapor enters the turbine at 10 MPa, 480°C, and the condenser pressure is 7.5 kPa...
Superheated vapor enters the turbine at 10 MPa, 480°C, and the
condenser pressure is 7.5 kPa of a steam Rankine power cycle.
Isentropic efficiencies of the turbine and pump are 84% and 73%,
respectively. Determine for the cycle
a. Sketch the cycle of a T-s diagram. Indicate the isobars with
their values and the values for temperature and entropy.
b. The heat transfer to the working fluid passing through the
steam generator, in kJ per kg of steam flowing.
c....
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