The work done on the system when one mole of an ideal gas is compressed isothermally to a final
volume of 0.01 m at constant external pressure
of 5 bar is 20 kJ. What is initial volume of the gas?
1) 0.05 m3
2) 0.025 m3
3) 0.04 m3
4) 0.03 m3
Answers
Answered by
7
Answer:
0.05 m3
Explanation:
From the equation
W=-Pex(Vf-Vi)
W=20 kJ = 20000 J
Vf=.01 m3
The only value that gives 20kJ is Vi=.05m3
Answered by
5
0.05 m3 is the answer, i.e. first option.
Explanation:
Based on the equation
W=-Pex(Vf-Vi)
20000 J = W=20 kJ
Vf =.0001 m3
Vi=.05m3 is the only value that yields 20kJ.
system: a subset of the cosmos under investigation.
universe: a portion of the universe that exists outside of the system.
Heat (q) is negative when given out (exothermic) and positive when absorbed (endothermic).
work (w): work performed by the system is negative, but work performed on the system is positive. PV work may be estimated as follows: w = -Pex(V) = -Pex(Vf - V)
Similar questions