Question

In the following problems, an ideal gas changes from one state to another state. The state variables of state A are: Pa = 5 atm, Va = 2 m^3, Ta = 400K. For this gas, Cv = 5R/2.

1) State A changes to state B by an isothermal process, where Vb = 6 m^3. What is Pb?

*ANS: 1.67atm*

2) State A changes to State C by an adiabatic process, where Vc
= 6 m^3. **What is Pc?**

*ANS: 1.07atm*

3) **Find the change in the internal energy of the gas
from the process A-B-C.**

*ANS:-9.01e5 J*

Answer #1

In the following problems, an ideal gas changes from one state
to another state. The state variables of state A are: P = 5 atm, V
= 3 m^3, T = 400K. For this gas, C = 5R/2.
1) State A changes to state B by an isothermal process, where Vb
= 6 m^3. What is Pb?
ANS: 1.67atm by PaVa = PbVb
2) State A changes to State C by an adiabatic process, where Vc
= 6 m^3. What...

2.00-mol of a monatomic ideal gas goes from State A to State D
via the path A→B→C→D:
State A PA=11.0atm, VA=13.00L
State B PB=11.0atm, VB=6.50L
State C PC=20.5atm, VC=6.50L
State D PD=20.5atm, VD=22.00L
Assume that the external pressure is constant during each step
and equals the final pressure of the gas for that step.
Calculate q for this process.
Calculate w for this process.

When n moles of a monotonic gas undergo an adiabatic process,
the temperature, pressure, and volume change from (Ta, pa, Va) to
(Tb, pb, Vb). If pb<pa, which statement is false?
(A) Vb >Va
(B) Tb <Ta
(C) The change in internal energy is DU=Ub – Ua = 3/2 (pbVb –
paVa).
(D) The temperature Tb is given by Tb = Ta (Va/Vb)g.
(E) The change in entropy is zero.

We consider an isolated system made up of 2 moles of an ideal
gas which can pass reversibly from a state A (PA, VA, TA = 300 K)
to a state B (PB = 3PA, VB = VA / 3, TB) by a transformation which
comprises two stages: it is first isochoric (constant volume), then
isobaric (constant pressure).
1-Determine the work involved.
The ideal gas constant is R = 8.31 J / K.mol, and the internal
energy of an ideal...

The PV diagram shows the compression of 60.1 moles of an
ideal monoatomic gas from state A to state B. Calculate Q,
the heat added to the gas in the process A to B. Data: PA=
1.84E+5 N/m2 VA= 1.97E+0 m3 PB= 1.15E+5 N/m2 VB=
9.30E-1 m3

An ideal monatomic gas at Pa = 3x10^5 N/m^2, Va = 0.06m^3, and T
= 27C expands adiabatically tp Pb = 2x10^5 N/m^2 and Vb = 0.085m^3
and then isothermally to Vc = 0.1m^3. What are the final
temperature, pressure, and work performed by the gas? Show these
paths on a P-V diagram

The above pV diagram shows the expansion of 5.0 moles of a
monatomic ideal gas from state a to state b. As shown in the
diagram, Pa = Pb = 600 Pa, Va = 3.0 m3, and Vb = 9.0 m3. The
pressure is then reduced to 200 Pa without changing the volume, as
the gas is taken from state b to state c.
c. Determine Q for the process bc.
d. Determine the change in thermal energy of the...

2 moles of a monatomic perfect gas (initial state A and final
state C) undergo an isobaric expansion AB followed by an adiabatic
expansion BC.
TA= 18 C
PA= 2*10^5 Pa
VB= 0,048m^3
Calculate TB and the amount of heat Q exchanged in the
transformation from A to C.

) An ideal gas (Cp = 5 kcal/kmol, Cv = 3
kcal/kmol) is changed from 1 atm and 22.4 m3 to 10 atm
and 2.24 m3 by the following reversible process
(i) Isothermal
compression
(ii) Adiabatic
compression followed by cooling at constant volume
(iii) Cooling at
constant pressure followed by heating at constant volume
Calculate the heat, work requirement,
?U and ?H for each
process.

Ten liters of a monoatomic ideal gas at 25o C and 10
atm pressure are expanded to a final pressure of 1 atm. The molar
heat capacity of the gas at constant volume, Cv, is 3/2R and is
independent of temperature. Calculate the work done, the heat
absorbed, and the change in U and H for the gas if the process is
carried out
(1) isothermally and reversibly, and
(2) adiabatically and reversibly.
Having determined the final state of the...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 19 minutes ago

asked 26 minutes ago

asked 40 minutes ago

asked 40 minutes ago

asked 50 minutes ago

asked 51 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago