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Q.

With what minimum pressure (in kPa), a given volume of an ideal gas (Cp,m=7/2R), Originally at 400 K and 100 kPa pressure can be compressed irreversibly adiabatically in order to raise its temperature to  600 K:

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a

362.5 kPa

b

275 kPa

c

437.5 kPa

d

550 kPa

answer is B.

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Detailed Solution

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For adiabatic irreversible compression  ΔU=W,       nCv,m(T2-T1)=P2[nRT2P2nRT1P1]

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