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A reversible cyclic process for an ideal...

A reversible cyclic process for an ideal gas is shown below. Here, P, V, and T are pressure, volume and temperature, respectively. The thermodynamic parameters q, w, H and U are heat, work, enthalpy and internal energy, respectively.

The correct option (s) is (are)

A

`q_(AC)=DeltaU_(BC) and w_(AB)=P_(2)(V_(2)-V_(1))`

B

`w_(BC)=P_(2)(V_(2)-V_(1)) and q_(BC)=DeltaH_(AC)`

C

`DeltaH_(CA) lt DeltaU_(CA) and q_(AC)=DeltaU_(BC)`

D

`q_(BC)=DeltaH_(AC) and DeltaH_(CA) gt DeltaU_(CA)`.

Text Solution

Verified by Experts

The correct Answer is:
B, C
In the given cyclic process:
`AC to` Isochoric process
`AB to` Isothermal process
`BC to ` isobaric process
(b). `w_(BC)=-P_(2)(V_(2)-V_(1))` work of isobaric expansion (correct)
`=P_2(V_(1)-V_(2))`
`q_(BC)=DeltaH_(AC)=nC_(p)(T_(2)-T_(1))` Enthalpy change in isobaric process (correct)
(c) `nC_(p)(T_(1)-T_(2)) lt nC_(V)(T_(1)-T_(2))`
`DeltaH_(CA) lt DeltaU_(CA)` (correct)
`q_(AC)=DeltaU_(BC)`.
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