Chemical Engineering Thermodynamics

Internal energy is equal to the heat absorbed in case of a/an __________ process.

  • A. Constant volume
  • B. Polytropic
  • C. Adiabatic
  • D. Constant pressure
Answer: Option A.
Explanation: 

By first law of thermodynamics for a system undergoing only expansion work we can write δQ=dU+PdV

For an isochoric process since dV=0
we can write δQ=dU.

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