For the following processes, calculate the indicated quanti- ties for a system consisting of 1 mol...
For the following processes, calculate the indicated quanti- ties for a system consisting of 1 mol of N2 gas. Assume ideal gas behavior.
a. The gas, initially at 10 bar, is expanded tenfold in volume against a constant external pressure of 1 bar, all at 298 K. Calculate q, w, ?U and ?H for the gas.
b. After the expansion in part (a), the volume is fixed, and heat is added until the temperature reaches 373 K. Calculate q, w, ?U and ?H.
c. What will be the pressure of the gas at the end of the process in part (b)?
d. If the gas at 373 K is next allowed to expand against 1 bar pressure under adiabatic conditions (no heat transferred), will the final temperature be higher, remain unchanged, or be lower than 373 K? Explain your answer.
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For the following processes, calculate the indicated quanti-
ties for a system consisting of 1 mol...
Two moles of oxygen gas, which can be regarded as ideal with ?? = 29.4 J/(K...
Two moles of oxygen gas, which can be regarded as ideal with ?? = 29.4 J/(K ∙ mol) (independent of temperature), are initially at 298 K in a volume of 12.5 dm3 . The gas is expanded reversibly to 353 K at constant pressure. Calculate the final volume and q, w, ∆U, ∆H, ∆S. (25 points) 4. Suppose that the gas in question 3 is reversibly compressed to half its volume at constant temperature (298 K). Calculate the final pressure...
Assume there's 1 mol ideal mono-atomic gas in a 22.4L container at 300K. The initial entropy...
Assume there's 1 mol ideal mono-atomic gas in a 22.4L container
at 300K. The initial entropy of the system is 100J/K. For the
following processes, calculate:
a) q and w for a reversible expansion to twice the volume,
isothermally.
b)
S and
G for irreversible isothermal expansion against a constant 0.5 bar
external pressure, to a final internal pressure of 0.5 bar.
c)
U and
H for adiabatic reversible expansion to twice the volume.
P3A.2 A sample consisting of 0.10 mol of perfect gas muICLUL is piston inside a cylinder...
P3A.2 A sample consisting of 0.10 mol of perfect gas muICLUL is piston inside a cylinder such that the volume is 1.25 dm'; the external pressure is constant at 1.00 bar and the temperature is maintained at 300 K by a thermostat. The piston is released so that the gas can expand. Calculate (a) the volume of the gas when the expansion is complete; (b) the work done when the gas expands; (c) the heat absorbed by the system. Hence...
how to do this? thank u? Consider a system consisting of 1.0 mol CO_2 (assumed to...
how to do this? thank u?
Consider a system consisting of 1.0 mol CO_2 (assumed to be a perfect gas) at 15 degreeC confined to a cylinder of cross-section 10 cm^2 at 10 atm. The gas is diowed to expand adiabatic ally and irreversibly against a constant pressure of 1.0 atm. Calculate when piston has moved 20 cm.
1.95 mol of an ideal gas with CV = 3R/2 undergoes the following transformations from an...
1.95 mol of an ideal gas with CV = 3R/2 undergoes the following transformations from an initial state T = 290 K, P = 1.000 bar. Find q, w, ∆U, ∆H and ∆S for each transformation. a) A reversible adiabatic compression until the final temperature reaches 390 K.
A sample of 5.0 mol CO2(g) is originally confined in 15 dm3 at 280 K and...
A sample of 5.0 mol CO2(g) is originally confined in 15 dm3 at 280 K and then undergoes adiabatic expansion against a constant pressure of 78.5 kPa until the volume has increased by a factor of 4.0. Calculate q, w, delta T, and delta U, and delta H. (The final pressure of the gas is not necessarily 78.5 kPa.) If the enthalpy you calculate does not equal -4.5 kJ and the temperature change - 24 K, you made a mistake.
A system consists of 2.320 g of carbon monoxide gas initially at temperature 400.0 K and...
A system consists of 2.320 g of carbon monoxide gas initially at temperature 400.0 K and pressure 0.6250 bar. Assume the heat capacity of carbon monoxide is constant at the value found for 298.15 K in the data tables of the Appendix (see also Figure 2.8). The system undergoes the following cyclic process: Step a) Reversible isothermal expansion to double the initial volume. Step b) Constant volume extraction of heat from the system (to a temperature and pressure consistent with...
A 4.0 mol sample of O2 gas starts off with a volume of 20 L at...
A 4.0 mol sample of O2 gas starts off with a volume of 20 L at 270 K. It is allowed to undergo an adiabatic expansion against a constant pressure of 600 torr until the volume has increased by a factor of 3. Calculate q, w, ∆T, ∆U, and ∆H, for this process. Note: consider this process carefully. Is it reversible? Is the final pressure 600 torr? Treat the gas as ideal.
1 00 mol of a perfect gas initially at 1 00 atm and 298 K with...
1 00 mol of a perfect gas initially at 1 00 atm and 298 K with Cpm (7/2) R is put through the following cycle () constant-volume heating to twice its initial temperature (u) reversible, adiabatic expansion back to its onginal temperature () reversible, isothermal compression back to 1 00 atm Calculate q, w, AU, and AH for each of the steps ()-(m) above Hints First calculate AU, then q AH easily follows Remember the meaning of an adiabatic process...
for the irreversible adiabatic heating of an ideal diatomic gas, calculate q, w, delta U, delta...
for the irreversible adiabatic heating of an ideal diatomic gas, calculate q, w, delta U, delta H, and the final temperature given p1 = 0.5 bar, p2 =3.5 bar, and T1 = 150 K
Assume there's 1 mol ideal mono-atomic gas in a 22.4L container
at 300K. The initial entropy of the system is 100J/K. For the
following processes, calculate:
a) q and w for a reversible expansion to twice the volume,
isothermally.
b)
S and
G for irreversible isothermal expansion against a constant 0.5 bar
external pressure, to a final internal pressure of 0.5 bar.
c)
U and
H for adiabatic reversible expansion to twice the volume.
P3A.2 A sample consisting of 0.10 mol of perfect gas muICLUL is piston inside a cylinder such that the volume is 1.25 dm'; the external pressure is constant at 1.00 bar and the temperature is maintained at 300 K by a thermostat. The piston is released so that the gas can expand. Calculate (a) the volume of the gas when the expansion is complete; (b) the work done when the gas expands; (c) the heat absorbed by the system. Hence...
how to do this? thank u?
Consider a system consisting of 1.0 mol CO_2 (assumed to be a perfect gas) at 15 degreeC confined to a cylinder of cross-section 10 cm^2 at 10 atm. The gas is diowed to expand adiabatic ally and irreversibly against a constant pressure of 1.0 atm. Calculate when piston has moved 20 cm.
A sample of 5.0 mol CO2(g) is originally confined in 15 dm3 at 280 K and then undergoes adiabatic expansion against a constant pressure of 78.5 kPa until the volume has increased by a factor of 4.0. Calculate q, w, delta T, and delta U, and delta H. (The final pressure of the gas is not necessarily 78.5 kPa.) If the enthalpy you calculate does not equal -4.5 kJ and the temperature change - 24 K, you made a mistake.
A system consists of 2.320 g of carbon monoxide gas initially at temperature 400.0 K and pressure 0.6250 bar. Assume the heat capacity of carbon monoxide is constant at the value found for 298.15 K in the data tables of the Appendix (see also Figure 2.8). The system undergoes the following cyclic process: Step a) Reversible isothermal expansion to double the initial volume. Step b) Constant volume extraction of heat from the system (to a temperature and pressure consistent with...
1 00 mol of a perfect gas initially at 1 00 atm and 298 K with Cpm (7/2) R is put through the following cycle () constant-volume heating to twice its initial temperature (u) reversible, adiabatic expansion back to its onginal temperature () reversible, isothermal compression back to 1 00 atm Calculate q, w, AU, and AH for each of the steps ()-(m) above Hints First calculate AU, then q AH easily follows Remember the meaning of an adiabatic process...
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