Question
The vapor pressures of methanol at two different temperatures are shown below. Use the following data...
The vapor pressures of methanol at two different temperatures are shown below. Use the following data to determine the heat of vaporization (Hvap) for methanol: Vapor pressure of methanol: 53.699 torr (at 283.1 K) 403.14 torr (at 323.1 K)
Use the following data to determine vapor pressure (in torr) of n-pentane at 293.1 K : Heat of vaporization (Hvap) for n-pentane: 27.692 kJ/mol Vapor pressure of n-pentane at 283.1 K: 280.75 torr
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
Portable lanterns and stoves used for camping often use a mixture of hydrocarbons for fuel. One...
Portable lanterns and stoves used for camping often use a
mixture of hydrocarbons for fuel. One such hydrocarbon is an alkane
called n-pentane. These lanterns and stoves are often difficult to
light on a cold day because the fuel has a low vapor pressure at
low temperatures. Determine the vapor pressure of n-pentane on a
night when the temperature is 0.0°C. The enthalpy of vaporization
of n-pentane is 27.6 kJ/mol, and its boiling point is 36.0°C.
a.367 torr
b.479 torr...
The vapor pressure, P, of a certain liquid was measured at two temperatures, T. The data...
The vapor pressure, P, of a certain liquid was measured at two
temperatures, T. The data is shown in this table.
T(K) P(kPa)
275 3.64
575 5.28
If you were going to graphically determine the enthalpy of
vaporizaton, ?Hvap, for this liquid, what points would you
plot?
x y
point 1 x axis in 3 significant figures and y axis in
4 significant
figures _____ _______
pont 2 x axis in 3 significant figures and y axis in 4
significant
figures _____ _______
Determine the rise, run, and slope...
1. The following are the vapor pressures of some relatively common chemicals measured at 20 °C:...
1. The following are the vapor pressures of some relatively
common chemicals measured at 20 °C:
Benzene, C6H6
80 torr
Acetic acid,
HC2H3O2
11.7 torr
Acetone, C3H6O
184.8 torr
Water, H2O
17.5 torr
Diethyl ether,
C4H10O
442.2 torr
Arrange these substances in order of increasing boiling point.
2. At 0.00 °C, hexane, C6H14, has a vapor
pressure of 45.37 mm Hg. Its ΔHvap is 30.1 kJ
mol-1. What is the vapor pressure of hexane at 12.9
°C?
The vapor pressure...
This table displays the vapour pressure of nitrogen at several different temperatures. Temperature (K ) Pressure...
This table displays the vapour pressure of nitrogen at several
different temperatures.
Temperature (K )
Pressure (mbar)
65
174.0
70
386.0
75
761.0
80
1371
85
2290
QUse the data to determine the heat of vaporization of
nitrogen._________ kj mol-1
Determine the normal boiling point of
nitrogen.______________k
The vapor pressure, ?P, of a certain liquid was measured at two temperatures, ?T. The data...
The vapor pressure, ?P, of a certain liquid was measured at two
temperatures, ?T. The data is shown in the table.
T (K)
P (kPa)
225
3.75
825
6.26
Keep the pressure units in kPa.
If you were going to graphically determine the enthalpy of
vaporizaton, Δ?vapΔHvap, for this liquid, what points would you
plot? To avoid rounding errors, use three significant figures in
the x-values and four significant figures in the y-values.
point 1: x=
point 1: y=
point...
1a. From the following vapor pressure data for octane, an estimate of the molar heat of vaporization...
1a. From the following vapor
pressure data for octane, an estimate of the molar
heat of vaporization of
C8H18
is kJ/mol.
P, mm Hg
T, Kelvins
100
339
400
377
1b.
The normal boiling point of liquid chloroform
is 334 K. Assuming that its molar heat of
vaporization is constant at 29.9 kJ/mol, the
boiling point of CHCl3 when the
external pressure is 1.34 atm is K.
1c.
The vapor pressure of liquid butanol,
C4H9OH, is
100. mm Hg at 343 K.
A...
The vapor pressure of benzene is found to obey the empirical equation ln(p/torr) = 16.725 -...
The vapor pressure of benzene is found to obey the empirical
equation ln(p/torr) = 16.725 - (3229.86 K)/T - (118345 K^2)/T^2
from 298.2K to its normal boiling point 353.24 K. Given that the
molar enthalpy of vaporization at 353.24K is 30.8 kJ/mol and that
the molar volume of liquid benzene at 353.24K is 96.0 cm^3/mol, use
the above equation to determine the molar volume of the vapor at
the boiling temperature. HINT: Use the Clausius Clapeyron equation
in some way...
7.1 Assume that the density of solid water is 920 kg m-3 and that of liquid...
7.1 Assume that the density of solid water is 920 kg m-3 and
that of liquid water is 1000 kg m-3. Calculate the change of the
melting temperature, T, of ice for the process of changing
pressure from 100 kPa to 1850 kPa. Use fusH = 6010 J mol-1 for
water.
7.2 At two temperatures, 85 K and 135 K, the vapor pressures of
a certain liquid were found to be 540 Torr and 830 Torr,
respectively. From this information,...
Use data in Table B.2 to calculate the following: a. The heat capacity (Cp) of liquid...
Use data in Table B.2 to calculate the following: a. The heat
capacity (Cp) of liquid benzene at 40C. (0.136 kJ/mol C) b. The
heat capacity at constant pressure of benzene vapor at 40?C. (0.087
kJ/mol C)
The table below gives the values for the rate constant, k, of the reaction between potassium...
The table below gives the values for the rate constant, k, of
the reaction between potassium hydroxide and bromoethane in ethanol
at a series of temperatures. Use these data to determine the
activation energy of the reaction.
Explain your answer in brief.
T/K 305.0 313.0 323.1 332.7 343.6 353.0
k/M-1 s-1 0.182 0.466 1.35 3.31 10.2 22.6
A 80J
B 90J
C 80 J mol-1
D 80 kJ mol-1
E 90 kJ mol-1
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 5 minutes ago
asked 17 minutes ago
asked 20 minutes ago
asked 23 minutes ago
asked 24 minutes ago
asked 35 minutes ago
asked 50 minutes ago
asked 56 minutes ago
asked 58 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago