Question
In: Chemistry
The vaporization of 1 mole of liquid water (the system) at 100.9°C, 1.00 atm, is endothermic....
The vaporization of 1 mole of liquid water (the system) at 100.9°C, 1.00 atm, is endothermic.
Assume at exactly 100.0°C and 1.00 atm total pressure, 1.00 mole of liquid water and 1.00 mole of water vapor occupy 18.80 mL and 30.62 L, respectively.
H20 (l) +40.7kJ ----> H20 (g)
Please answer both parts of the question:
1. Calculate the work done on or by the system when 3.45 mol of liquid H2O vaporizes.
2. Calculate the water's change in internal energy.
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
The vaporization of 1 mole of liquid water (the system) at 100.9°C, 1.00 atm, is endothermic....
The vaporization of 1 mole of liquid water (the system) at
100.9°C, 1.00 atm, is endothermic.
H2O(l)+40.7kJ H2O(g)
Assume at exactly 100.0°C and 1.00 atm total pressure, 1.00 mole
of liquid water and 1.00 mole of water vapor occupy 18.80 mL and
30.62 L, respectively.
A)Calculate the work done on or by the system when 2.45 mol of
liquid H2O vaporizes.
__________J
Calculate the water's change in internal energy.
____________kj
H2O(l)+40.7kJ->H2O(g) Assume at exactly 100.0°C and 1.00 atm total pressure, 1.00 mole of liquid water and...
H2O(l)+40.7kJ->H2O(g) Assume at exactly 100.0°C and 1.00
atm total pressure, 1.00 mole of liquid water and 1.00 mole of
water vapor occupy 18.80 mL and 30.62 L, respectively.
Part 1: Calculate the work done on or by the system when 3.25
mol of liquid H2O vaporizes. ____J
Part 2: Calculate the water's change in internal energy.
____kJ
Given: Vapor–liquid equilibrium data in mole fractions for the system acetone–air–water at 1 atm (101.3 kPa)...
Given:
Vapor–liquid equilibrium data in mole fractions for the
system
acetone–air–water at 1 atm (101.3 kPa) are as follows:
y acetone in air
0.004
0.008
0.014
0.017
0.019
0.020
x acetone in water
0.002
0.004
0.006
0.008
0.010
0.012
Find:
(a) Plot the data as (1) moles acetone per mole air versus
moles
acetone per mole water, (2) partial pressure of acetone versus g
acetone
per g water, and (3) y versus x. (b) If 20 moles of gas
containing...
This is for thermodynamics: "The latent heat of vaporization for water at 1 atm and 100...
This is for thermodynamics:
"The latent heat of vaporization for water at 1 atm and 100
degrees C is 2.26x103 kJ/kg. Calculate the latent heat
for water at 2 atm and 100 C by combining the heat per kg required
to turn liquid water into steam at 1 atm with the heat per kg
required to change the pressure of that steam from 1 atm to 2 atm
at a temperature of 100 C. Treat the steam as an ideal...
Consider the expansion of 1.00 mole of (ideal) Ne from 2.00 atm at 75.00 C; the...
Consider the expansion of 1.00 mole of (ideal) Ne from 2.00 atm
at 75.00 C; the volume is doubled in the process. Find q, w, DH and
the final pressure and temperature for a:
(a) reversible adiabatic expansion
(b) reversible isothermal expansion
(c) reversible constant pressure expansion
(d) irreversible adiabat against 0.500 atm external pressure
6.103. A sample of oxygen was collected over water at 25°C and 1.00 atm. a. If...
6.103. A sample of oxygen was collected over water at 25°C
and
1.00 atm.
a. If the total sample volume was 0.480 L, how many moles of O2
were collected?
b. If the same volume of oxygen is collected over ethanol instead
of water, does it contain the same number of
moles of O2?
6.104. Water and ethanol were removed from the O2 samples in
Problem 6.103.
a. What is the volume of the dry O2 gas sample at 25°C...
Calculate the fugacity of liquid water in a binary liquid mixture with 40 mole % water...
Calculate the fugacity of liquid water in a binary liquid
mixture with 40 mole % water and 60 mole % ethanol at 70°C. The
following activity coefficient data, at infinite dilution, are
available: yinfinite H2O. = 2.62 and yinfinite ethanol = 7.24
7. (5 pts) A liquid with an enthalpy of vaporization, Hv, of 52.80 KJ/mole has a...
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
Air at 90.0°C and 1.0 atm (absolute) contains 7.0 mole% water. A continuous stream of this...
Air at 90.0°C and 1.0 atm (absolute) contains 7.0 mole% water. A
continuous stream of this air enters a compressor–condenser, in
which the temperature is lowered to 18.6°C and the pressure is
raised to 2.90 atm. The air leaving the condenser is then heated
isobarically to 90.0°C. Calculate the fraction of water that is
condensed from the air, the relative humidity of the outlet air at
90.0°C, and the ratio (m3 outlet air at 90.0°C)/(m3 feed air) at
90.0°C.
Find...
1. Obtain the equilibrium mole fractions (liquid and vapor) of a mixture of water, methanol and...
1. Obtain the equilibrium mole fractions (liquid and vapor) of a
mixture of water, methanol and ethanol at 100 kPa and 70°C. You can
assume the mixture is ideal.
2. Create one plot where the equilibrium mole fraction of benzene
in the vapor phase is plotted against the equilibrium mole fraction
of benzene in the liquid phase for three different pressures (0.2
bar, 0.6 bar and 1 bar). Comment on the effect of pressure on the
relative volatility
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